Final answer:
The Federal Reserve would adopt a contractionary monetary policy when the economy is overheating and inflation is rising, as this policy aims to reduce inflation by decreasing the money supply and increasing interest rates.
Step-by-step explanation:
The Federal Reserve would most likely adopt a contractionary monetary policy in the situation described by option A: When the economy is overheating and inflation is rising. In such scenarios, the Reserve aims to combat high inflation by decreasing the money supply and credit available in the economy. This is achieved by raising the interest rate, which consequently discourages borrowing for investment and consumption, leading to a shift in aggregate demand to the left. This shift is intended to lower the price level and, at least in the short run, cool down economic growth to prevent the economy from overheating.