Answer:
b.The Federal Open Market Committee (FOMC).
Step-by-step explanation:
The FOMC mainly determines the monetary policy including the interest rates etc. It is a branch of Federal Reserve Board. The FOMC has a total of 12 voting members. These members include 5 Federal Reserve Bank presidents out of the total 12 presidents and the remaining 7 voting members are the Board of Governors. This way the FOMC votes and determines the monetary policy.