The cash reserve ratio (CRR) of all banks was reduced by 100 basis points to 3.00 per cent, effective from the reporting fortnight beginning March 28, 2020. What was the intension behind this move?

To increase the money supply 

 CRR is a specified minimum fraction of the total deposits of customers, which commercial banks have to hold as reserves either in cash or as deposits with the central bank. With decrease in CRR, the commercial banks will have more money left for credit creation. This will result in an increase in the money supply.