Correct Option: B. Deposits Explanation of Why the Answer is Correct: In the context of a commercial bank's balance sheet, liabilities are obligations that the bank owes to others. The largest liability typically found in a commercial bank's books is deposits. Here’s a step-by-step breakdown of why this is the case:

1. Understanding Liabilities:
2. Liabilities are financial obligations that a bank must settle in the future. They represent the sources of funds that the bank uses to finance its operations and lend to customers.
3. Types of Liabilities:
4. Common types of liabilities for a bank include:
   • Deposits: Money that customers place in the bank, which the bank is obligated to return upon demand or at maturity.
   • Loans and Advances: These are assets for the bank, not liabilities. They represent money lent out to borrowers.
   • Capital and Reserves: This is the bank's own equity, which is not a liability but rather a source of funds that belongs to the shareholders.
5. Deposits as the Largest Liability:
6. Deposits are the primary source of funding for banks. They include various types of accounts such as savings accounts, checking accounts, and time deposits.
7. Banks use these deposits to make loans and investments, which generate income. The total amount of deposits usually far exceeds other liabilities, making it the largest liability on the balance sheet.
8. Regulatory Requirements:
9. Banks are required to maintain a certain level of reserves against deposits, but the total deposits still represent a significant portion of their liabilities. This is because banks operate on a fractional reserve banking system, where they only need to keep a fraction of deposits as reserves.
10. Balance Sheet Structure:
11. A simplified balance sheet of a bank would show:
    • Assets: Loans, investments, cash, etc.
    • Liabilities: Deposits, borrowings, etc.
    • Equity: Capital and reserves.
12. In this structure, deposits are typically the largest item under liabilities.

Explanation of Why Other Options Are Wrong or Weaker:

• A. Cash:
• Cash is an asset, not a liability. It represents the liquid funds that the bank has on hand. While cash is crucial for operations, it does not represent an obligation to others.
• C. Loans and Advances:
• Loans and advances are assets for the bank. They represent money that the bank has lent out and expects to receive back with interest. Therefore, they do not qualify as liabilities.
• D. Capital and Reserves:
• Capital and reserves are part of the bank's equity, not liabilities. They represent the funds contributed by shareholders and retained earnings. While important for the bank's stability and solvency, they do not represent obligations to depositors or creditors.

Summary of Key Points for Revision:

• The largest liability on a commercial bank's balance sheet is deposits.
• Deposits are funds that customers place in the bank, which the bank must return.
• Loans and advances are assets, while capital and reserves are equity, not liabilities.
• Understanding the structure of a bank's balance sheet is crucial for recognizing the nature of its liabilities.