Which statement best explains U.U. monetary policy?

Monetary policy includes the steps the nation's central bank takes to ensure a healthy economy
Monetary policy includes the exchange rate on the U.S. dollar in foreign markets
Monetary policy ensures steady job growth
Monetary policy prevents future economic downturns and financial panics

The statement that best explains U.S. monetary policy is: Monetary policy includes the steps the nation's central bank takes to ensure a healthy economy.