Monetary policy targets money supply and interest rates via central bank actions

Steps:

• Define monetary policy as central bank tools to manage money supply, interest rates, and credit availability.
• Review option A: Import tariffs are trade barriers set by government, not central bank.
• Review options B-D: All involve central bank control over rates, credit, or money.
• Conclude A falls outside monetary policy scope.

Why A is correct:

• Monetary policy, per economic definition, excludes trade tools like tariffs, which are fiscal or commercial policy levers.

Why the others are wrong:

• B: Central banks raise interest rates to curb inflation, a core monetary tool.
• C: Credit regulations limit lending, directly part of monetary control.
• D: Increasing money supply via open market operations is the essence of expansionary monetary policy.

Final answer: A