Explanation​:
Increasing the money supply is a type of expansionary monetary policy that aims to stimulate overall spending and may increase national output and the average price level. It is usually implemented by central banks during recessions, which are characterized by a decrease in price level, a high unemployment rate, or a negative economic growth rate.

Choice A depicts an ideal situation for the implementation of expansionary monetary policy as it could deal with weak demand that caused the recession without significant inflation coming from three successive quarters of deflation.

Choice B is incorrect as the maintenance of a 2$\%$ inflation rate is consistent with achieving inflation targeting by central banks. Expansionary monetary policy would introduce greater volatility in the average price level, causing higher inflation.

Choices C and D both depict a scenario where rapid economic growth is achieved through an increase in aggregate demand. However, implementing expansionary monetary in this case would not result in stable prices and low inflation.

Explanation​:
Budget deficits are financed through borrowing, which will $\text{‘}$crowd out$\text{’}$ private investment. Increased government borrowing makes loanable funds scarcer, driving up their price (interest rates).

Choices A, B and C are wrong, as sustained budget deficits increase AD and therefore the level of economic activity, resulting in:

• decreased net exports (X-M), which move the country towards a current account deficit
• increased inflation
• decreased unemployment

Explanation​:
Governments borrow by issuing bonds, which domestic or overseas individuals or entities (such as commercial or central banks) can purchase.

Choice A is incorrect because transfer payments only entail a redistribution of income. They do not directly increase demand for a nation’s goods or services.

Choice B is incorrect, as contractionary fiscal policy lowers inflation, making exports more competitive. Additionally, contractionary fiscal policy suppresses consumer spending, including spending on imports.

Choice D is incorrect, as fiscal policy can redistribute income by adjusting income tax and transfer payment policies.

Explanation​:
The goals of a central bank are focused on achieving short-term economic stability. These objectives include achieving low and stable inflation, implementing inflation targeting (choice A), reducing unemployment rates (choice B), and minimizing fluctuations in the business cycle (choice D).

Choice C is the correct answer because it is usually attributed to the goal of the executive branch of government and not the central bank.

Explanation​:
A shift of the SRAS curve to the left constitutes a negative supply shock and will push the economy into a period of stagflation, where the economy is experiencing both inflation and recession. As a result, the inflation rate rises and the unemployment rate rises as well.

Choice A would be the result of AD shifting rightward.

Choice B would be the result of AD shifting leftward.

Choice D would be the result of SRAS shifting rightward.

Explanation​:
An excise tax is a tax paid on specific commodities like cigarettes or petrol. It is a tax on expenditure, therefore it is an indirect tax.

Options A, B, and D are examples of direct taxes.

• Option A: as it is a tax on the wealth of an individual.
• Option B: as it is a tax on the income of companies.
• Option D: as it is the tax on the income of individuals.

Explanation​:
There is often a conflict between achieving economic growth and environmental sustainability. The pursuit of better economic well-being for citizens and increased efficiency of the economic system does not always guarantee environmental sustainability.

Economic growth is often accompanied by job creation and improvements in the standard of living of many citizens, so choices A and B are likely to be true. Economic growth often means an increase in total output produced by the economy, which involves the use of more resources and the production of more waste, so choice C is likely to be true.

It is least likely that economic growth is accompanied by decreases in greenhouse gas emissions, and thus choice D is the least likely to be true.

Explanation​:
Structural unemployment is caused by a decrease in demand for specific labor skills due to increased automation (replacement of workers by machinery) or outsourcing (moving jobs overseas due to cheaper labor costs).

Choices A, C, and D are also types of unemployment, but their causes are different.

Explanation​:

The following are adjustments made to GDP to allow for more accurate comparisons over time and between countries:

• • Adjustment for inflation: converts nominal figures into real figures
• • Adjustment for nationality: converts GDP to GNI
• • Adjustment for population size: converts total figures into per capita figures

While inflation, nationality, and population size are commonly adjusted for, there is no commonly used national income measure that adjusts for inequality (Choice D). While it is useful to measure income inequality and use it to compare between countries, it is not necessarily relevant to GDP calculations and adjustments.

Explanation​:
Closing an inflationary gap requires a decrease in AD, and increasing income tax and reducing the money supply are both contractionary policies, making D the correct answer.

Choices A, B, and C include expansionary policies, which do not close inflationary gaps.

Explanation​:
When AD decreases (AD to AD1​), the economy will be producing below its full-employment level of output: this is known as a recessionary gap.

During a recessionary gap, unemployment rises as businesses lay off workers in response to decreasing aggregate demand.

Choice A would be correct if AD shifted rightward.

Choice C would be correct if SRAS shifted leftward.

Choice D is not possible, as rising unemployment is a defining characteristic of a recession.

Explanation​:
Expansionary fiscal policy can decrease net exports (X-M) as increases in the price level can make exports less competitive, and rising incomes will increase spending on imports.

Choice B is wrong, as fiscal policy has no direct relationship with the money supply.

Choices C and D are wrong, as expansionary fiscal policy stimulates economic activity, increasing the employment and inflation rates.

Explanation​:

Leakages involve income earned that is not spent on domestic goods and services. Leakages include: saving, taxes, and import spending.

Export revenue is an injection into the circular flow, not a leakage.

Therefore, choices A, C, and D are incorrect because export revenue is an injection, not a leakage.

Explanation​:
Statement I is correct because a fall in consumer confidence will lead to a decrease in consumption expenditure and a decrease in AD, thus creating a deflationary gap.

Statement II is incorrect because a fall in interest rates will make borrowing cheaper (increasing consumption and investment expenditures) thus leading to an increase in AD, creating an inflationary gap.

Statement III is correct because a rise in taxes on corporate profits will lead to a decrease in investment expenditure and a decrease in AD, thus creating a deflationary gap.

Explanation​:
A fall in interest rates will make borrowing cheaper, and so encourage investment expenditure: aggregate demand (AD) will increase in the short-run.

Moreover, investment is the spending on the creation or replacement of capital, so in the long run, the quantity of capital will increase, leading to an increase in long-run aggregate supply (LRAS).

Choices A, C, and D will lead to an increase in AD in the short run, but are unlikely to cause an increase in LRAS in the long run.

Explanation​:
The aggregate demand shifts rightward (AD1​ to AD2​) when a component of AD increases. The components of AD are consumption (C), investment (I), government spending (G), and net exports (NX), which are calculated as exports (X) minus (M).

Choice I is incorrect because a future decrease in price levels will incentivise people to reduce consumption.

Choice II is correct because a reduction in interest rates boosts consumption and investment.

Choice III is incorrect because an increase in income taxes reduces disposable income and leads to a fall in consumption.

Choice IV is correct because an increase in income of trading partners increases a country's exports, increasing net exports.

Explanation​:
Interventionist supply-side policies may be a burden on the government budget but they often lead to a more equitable distribution of income, and less economic inequality.

Choices A, C, and D are possible drawbacks of such policies: they are expensive and may place an unsustainable burden on national debt, they involve long time-lags, and the increased government spending may create inflationary pressures in the economy.

Explanation​:
Choice D incorrectly describes speculative demand for money. It suggests that money has inherent value and that people speculate on the appreciation of money itself. However, speculative demand for money occurs when people anticipate a change in interest rates and prefer to hold money over interest-bearing assets.
Choice A describes the transactions motive.
Choice B describes the precautionary motive.
Choice C describes the speculative motive.

Explanation​:
An increase in the corporate tax rate will decrease AD by decreasing investment in the economy.

Choices B and D redistribute income in a way that should increase consumption, as the marginal propensity to consume for lower-income households tends to be higher.

Choice C is wrong, as increasing government spending directly increases AD.

Explanation​:
To determine GDP, the expenditure approach sums the expenditure of all sectors of the economy: spending on capital by firms, plus spending on domestic goods and services by households, the government, and foreign consumers, minus domestic spending on foreign goods and services.

$GDP=C+I+G+(X-M)$

Choices A and D are incorrect because saving and taxes are never included in GDP. Choice B is incorrect because the equation calculates net exports incorrectly.

Explanation​:
In the Keynesian model, wages are assumed to be downwardly inflexible: they may rise in times of inflation, but rarely fall in times of recession. For this reason, the economy could get stuck in a recessionary gap if the government does not intervene. This is because production costs will not fall, and so, aggregate supply will not increase.

Choices A, B, and C are all associated with the new classical/monetarist model, which assumes that recessionary gaps are not persistent.

Explanation​:
While many governments pursue policies such as tariffs to protect their domestic producers from cheap imports, this is not a goal of supply-side policies, but rather of trade protection policies.

Choices A, B, and D are all goals of supply-side policies.

Explanation​:
Statement I is correct: an outward shift of the PPC illustrates long-term growth or growth in production possibilities.

Statement II is correct: a movement closer to an existing PPC shows short-term growth, or growth in actual output.

Statement III is correct: an outward shift of the PPC occurs if the quantity of resources increases.

Statement IV is incorrect: an increase in the quality of resources shifts the PPC outward.

Explanation​:
Choice D is the correct answer because if consumer confidence and business confidence are weak or pessimistic, they would have a dampening effect on the effectiveness of interest rate decreases. If so, consumption and investment spending will not increase as much as desired.

The following are strengths of monetary policy:

• Choice A gives the central bank flexibility in responding to changing economic conditions.
• Choice B allows the central bank to make more targeted changes to the economy.
• Choice C gives the central bank more freedom because it can reverse policies that do not achieve the desired effect.