“Increase reserve requirement” is the action that the Federal Reserve would most likely take to rein in spiraling inflation.
The Federal Reserve System—also known as the Federal Reserve or simply as the Fed—is the central banking system of the United States.
The correct answer between all the choices given is the second choice or letter B. I am hoping that this answer has satisfied your query and it will be able to help you in your endeavor, and if you would like, feel free to ask another question.