The correct answer is D.
The Federal Reserve System ( Federal Reserve or "the Fed" ), is the central bank of the United States. It was signed into law on December 23, 1913 by president Woodrow Wilson.
The main goal of Federal Reserve is to regulate the stock market. It is done by supervising the banks and their operations to make sure their customers are protected and by assessing the risks associated with financial investments. It also influences credit and money conditions to ensure full employment is reached and the prices are stable. Another goal of FDR is to provide certain financial services to U.S. government and institutions.