Explanation:

- Option 1: Commercial Bank

- The Central Bank of India is actually a commercial bank. It's one of the oldest and largest commercial banks in India.

- It provides various banking products and services to individuals and businesses alike.

- Correct Answer

- Option 2: Central Bank

- A central bank is a national institution responsible for managing a state's currency, money supply, and interest rates.

- Examples include the Reserve Bank of India, which is India’s central bank, not the Central Bank of India.

- Option 3: Private Bank

- Private banks are owned by private entities or individuals.

- The Central Bank of India is not a private bank as it is publicly owned.

- Option 4: None of these

- This option is incorrect as the Central Bank of India is indeed a commercial bank.