In 1913, the government's power to regulate interest rates and the supply money was broadened by the
a. clayton antitrust act
b. 16th amendment
c. sherman antitrust act
d. federal reserve act

The best and most correct answer among the choices provided by the question is the fourth choice "Federal Reserve Act"
The Federal Reserve Act (ch. 6, 38 Stat. 251, enacted December 23, 1913, 12 U.S.C. ch. 3) is an Act of Congress that created and established the Federal Reserve System, the central banking system of the United States, and which created the authority to issue Federal Reserve Notes (now commonly known as the U.S. Dollar)