Monetary policy is LEAST effective in reversing:
A. a decrease in private spending.
B. rapid growth in consumption expenditures.
C. an adverse supply shock.
D. demand-pull inflation.
The Correct Answer and Explanation is:
Correct Answer: C. an adverse supply shock.
Explanation:
Monetary policy refers to the actions undertaken by a country’s central bank—such as the Federal Reserve in the United States—to control money supply and interest rates in order to influence economic activity. There are two main types: expansionary monetary policy, which is used to stimulate the economy by lowering interest rates and increasing money supply, and contractionary monetary policy, which is used to cool down inflation by raising interest rates and tightening the money supply.
Let’s consider the choices:
A. A decrease in private spending
Monetary policy, particularly expansionary policy, is quite effective in counteracting reduced private spending. Lowering interest rates makes borrowing cheaper, which encourages households and businesses to spend and invest more, helping to reverse the downturn.
B. Rapid growth in consumption expenditures
Contractionary monetary policy is effective here. By increasing interest rates, borrowing becomes more expensive, which tends to reduce excessive consumer spending and helps stabilize the economy.
C. An adverse supply shock
This is the least responsive to monetary policy. An adverse supply shock (e.g., a sudden rise in oil prices, natural disasters, or geopolitical tensions disrupting supply chains) reduces aggregate supply, leading to stagflation—a combination of high inflation and stagnant growth. Monetary policy primarily targets aggregate demand, not aggregate supply. Lowering interest rates in such a scenario may stimulate demand but would do little to fix the underlying supply problem—and may worsen inflation.
D. Demand-pull inflation
This is caused by excessive demand in the economy. Monetary policy is effective in this case: raising interest rates can reduce spending and borrowing, cooling off demand and helping to bring inflation under control.
In summary, while monetary policy is effective in managing demand-side issues, it is least effective in addressing supply-side problems, making C the correct answer.