Unit 4: Money and Monetary Policy

Answer: A — When the Federal Reserve sells government securities (a contractionary open market operation), it removes money from the banking system. Banks pay the Fed for these securities, which decreases their reserves and reduces the monetary base. With fewer reserves, banks have less capacity to lend, so they contract credit availability. This reduces the money supply in circulation. As money becomes scarcer, interest rates rise (the price of borrowing increases). Higher interest rates discourage investment spending and consumer borrowing, reducing aggregate demand. This is the correct transmission mechanism for contractionary monetary policy. Option B describes the opposite scenario (buying securities), which would be expansionary. Option C is incorrect because banks cannot simply maintain lending levels when reserves decline—the reserve requirement constrains their ability to lend. Option D contains contradictions (monetary base shouldn't increase during a sale operation) and incorrectly suggests the discount rate would fall during contraction; the Fed would raise, not lower, the discount rate to discourage borrowing from the Fed during contractionary policy.

Answer: B — The correct answer is B. This question tests understanding of the liquidity trap concept and monetary policy effectiveness. When banks are already holding substantial excess reserves, they do so because they perceive few profitable lending opportunities—typically because interest rates are already very low. If the economy is in a liquidity trap (often associated with a zero lower bound on interest rates), additional money supply increases will simply add to excess reserves without stimulating lending or investment, as the opportunity cost of holding money approaches zero. The money supply increase fails to translate into aggregate demand stimulus. Option A is incorrect because it describes normal bank behavior unrelated to excess reserves; banks would already be making this choice if profitable. Option C confuses short-term monetary stimulus with long-term inflation and ignores that stimulus is precisely intended to increase demand when it's deficient. Option D is factually wrong—reserve requirements are set by the Federal Reserve, not by individual banks in response to holding reserves. This question requires students to synthesize knowledge of the money multiplier, interest rate mechanisms, and the special case where monetary policy becomes ineffective.

Answer: A — The correct answer is A because selling securities on the open market reduces the money supply, which in turn reduces demand for goods and services and helps to combat inflation. Option B is incorrect because lowering the reserve requirement would increase lending and the money supply, exacerbating inflation. Option C is incorrect because reducing the discount rate would stimulate borrowing and spending, also exacerbating inflation. Option D is incorrect because increasing the federal funds target rate would indeed reduce inflation, but the question asks for the tool that would be most effective, and selling securities is a more direct and effective way to reduce the money supply and combat inflation.

Answer: A — Option A is correct because when the Federal Reserve purchases government securities from commercial banks, it injects money directly into the banking system. Banks receive payment for these securities, which increases their reserves and allows them to lend more money to consumers and businesses, thereby expanding the money supply. This is a primary tool of expansionary monetary policy. Option B is incorrect because raising the discount rate makes it more expensive for banks to borrow from the Fed, which discourages borrowing and reduces the money supply—the opposite of what is intended. Option C is incorrect because increasing reserve requirements forces banks to hold more money in reserves and lend less to the public, which contracts the money supply. Option D is incorrect because selling securities removes money from the economy as the public pays for them, which decreases the money supply rather than increasing it. This action represents contractionary monetary policy.

Answer: A — Selling securities on the open market reduces the money supply by absorbing excess funds from the economy. This is because when the Fed sells securities, it receives money from banks, which in turn reduces the amount of money banks have to lend, thus decreasing the money supply. Options B and C would actually increase the money supply, while option D might not be effective in reducing the money supply if the federal funds target rate is not accompanied by a reduction in the money supply through the sale of securities.