The discount rate is the: multiple choice 1 interest rate at which banks can borrow reserves from other banks. lowest interest rate that banks can charge for loans to their most creditworthy customers. lowest interest rate that banks can charge for lending reserves to other banks or financial institutions. interest rate at which banks can borrow reserves from the Federal Reserve. b. If the Fed were to decrease the discount rate, banks will borrow: multiple choice 2 fewer reserves, causing an increase in lending and the money supply. more reserves, causing an increase in lending and the money supply. more reserves, causing a decrease in lending and the money supply. fewer reserves, causing a decrease in lending and the money supply.