The most widely used monetary tool is

A) altering the discount rate.
B) altering the reserve requirements.
C) open-market operations.
D) altering marginal tax rates.
E) None of the options are correct.

Monetary Tool

Instruments used by central banks to control the supply of money in the economy, impacting interest rates and overall economic activity.

Open-Market Operations

These are actions, like buying or selling government bonds, undertaken by central banks to control the money supply and interest rates.