Answer :
Monetarist economists believe that the economy is self-regulating and will be at full employment as long as monetary policy is not erratic.
A monetarist economist holds the strong belief that money supply including physical currency, credit, and deposits, are the primary factor affecting demand in an economy. Consequently, the economy's performance can be regulated by changes in the money supply.
Monetarists believe that the economy is self-regulating, the changes in velocity and the money supply can change aggregate demand, price level, and real GDP in the short run but only the price level in the long run.
Hence, as long as monetary policy is not erratic, the economy will remain self-regulating.
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