Explanation

In liability management strategy, banks actively manage their liabilities to meet liquidity needs. U.S. Treasury securities are considered the most liquid and highest-quality assets that can be quickly converted to cash in the repo market or sold outright. Federal agency securities, while still relatively liquid, are generally less liquid than U.S. Treasuries and may carry slightly more credit risk.

Key points:

• U.S. Treasury securities are the benchmark for liquidity and safety
• They can be easily used in repo transactions for short-term funding
• Federal agency securities have slightly lower liquidity and higher credit risk
• Liability management focuses on using high-quality, liquid assets that can be quickly monetized

Therefore, a bank using liability management strategy would most likely rely on U.S. Treasury securities as its primary source of liquidity.