Answer:
money supply
Step-by-step explanation:
Monetarists are a branch of new classical economists that, as the name suggests, believe that money has a very important part to play within an economy.They believe that aggregate expenditures in the economy are influenced by the market rate of interest, and therefore money can affect the level of output in the short run economy.However, they further believe that money influences the long run unemployment in the economy. If monetary policies are used to increase aggregate demand, it is thought that this use of additional money may cause a short term boost in output, but will ultimately lead to inflation in the economy.
So the answer is money supply