Explanation:

An increase in the money supply causes interest rates to fall, investment spending to rise, and aggregate demand to rise.
A change in interest rates is one way to make that correspondence happen. A fall in interest rates increases the amount of money people wish to hold, while a rise in interest rates decreases that amount. A change in prices is another way to make the money supply equal the amount demanded.
Ways to increase the money supply
a) Print more notes – usually by Central Banks.
b) Central Bank can electronically create money. ...
c) Increase lending of money by Banks – If banks hold a small % of bank deposits as cash, they can lend out more cash and this increases the money Supply.
d) Central Bank buying government securities.