Explanation:

• SLR, statutory liquidity ratio is the amount of money that is invested in certain specified securities predominantly central government and state government securities. Investing in government securities by bank is one way of fulfilling the requirement of SLR. In this way, SLR acts as a lending mechanism to government.
• While CRR is the amount in cash which banks have to keep with RBI.The repo rate is the rate at which the RBI lends money to the banking system (or banks) for short durations. The reverse repo rate is the rate at which banks can park their money with the RBI. It is not ment for Government lending. Hence only statement 4th is correct.