Answer:
d) the money supply should grow at a constant rate.
Explanation:
The Federal Reserve System (popularly referred to as the 'Fed') was created by the Federal Reserve Act, passed by the U.S Congress on the 23rd of December, 1913. The Fed began operations in 1914 and just like all central banks, the Federal Reserve is a United States government agency.
Generally, the Fed controls the issuance of currency in United States of America: it promotes public goals such as economic growth, low inflation, and the smooth operation of financial markets.
Monetary growth rule is a theory that was proposed by Friedman and it states that the Federal Reserve System (Fed) should be required to set or target the money supply growth rate to be equal to the growth rate of Real gross domestic product (GDP) each year and leaving the price level of goods and services unchanged.
Basically, this growth rate of gross domestic product (GDP) is usually set between 1% and 4%. Also, the monetary growth rule is also referred to as the K-Percent rule.
Hence, a monetary growth rule means that the money supply should grow at a constant rate.