Step 1: Understand the money market.
The money market is a segment of the financial market for short-term borrowing and lending with maturities of one year or less.
Step 2: Analyze the instruments listed.
Commercial Papers (CPs) are short-term unsecured debt instruments issued by corporations.
Trade Bills are instruments used to finance trade, typically between two business entities.
Treasury Bills (T-Bills) are short-term debt instruments issued by the central government to raise funds and manage short-term liquidity needs.
Step 3: Identify the government's instrument.
Based on the definitions, Treasury Bills are the instrument used by the central government to borrow from the money market.