Which of the following is not one of the functions of the Federal Reserve System for controlling the money supply?

The correct answer is that "to print money" is not one of the direct functions of the Federal Reserve System. While the Federal Reserve plays a crucial role in managing the money supply, it does not physically print money. That task is actually carried out by the U.S. Treasury Department, specifically the Bureau of Engraving and Printing.

The Federal Reserve does influence the money supply and the economy through various monetary policy tools, such as setting interest rates and regulating financial institutions. By adjusting interest rates, the Fed can expand or contract the money supply, which affects overall economic activity. In addition, the Federal Reserve is involved in controlling inflation by implementing policies that aim to stabilize prices and ensure economic growth.

Understanding this distinction is important because it highlights the Fed's regulatory and policy-making functions compared to the physical aspects of currency manufacturing, which are handled by different entities within the government.