There are several ways that governments can increase or decrease the money supply. Match the descriptions below with the corresponding policy tool. It\'s possible that a description does not apply to any of the terms. Solution Open market operations is the technique by which the Government sells and purchases Government securities in open market. This is a monetary policy tool. Answer \" A central bank purchasing existing bonds.\" Reserve requirement : An increase in the percentage of deposits that banks must keep on hand. Discount rate : This is the rate at which Central banks lends loans to commercial banks. An increase in the interest rate that a central bankk charges commercial banks for loans. The rest do not apply to any category..