Explanation:

- Option 1: To Accept Deposits

Commercial banks are primarily responsible for accepting deposits from the public. This helps them to gather funds, which they can use for other financial activities.

- Option 2: To Offer Loans

Offering loans is one of the crucial functions of commercial banks. They lend money to individuals and businesses based on interest, thus generating revenue.

- Option 3: To Provide Overdraft Facility

This facility allows account holders to withdraw more money than they have in their accounts, up to a certain limit. It is a common service provided by commercial banks.

- Option 4: To Fix CRR

The Cash Reserve Ratio (CRR) is determined by the central bank of a country, not commercial banks. It refers to the portion of deposits banks must hold in reserve and not lend out as loans.

Correct Answer: Option 4 - To fix CRR