The correct choice for first question is the rate of growth of
Q. This is because price level is a stable so there is no
inflation. velocity is constant so any change in the money growth
rate will be equivalent to growth rate of output.
The answer for the second question is all the options, a b and
c. Monetarist believe that changes in money supply can actually
influence the price level wages and therefore output level in the
short run.
The correct choice for third question is expectations effect. It
basically happens because when there is an increase in the nominal
interest rate, there is a change in the aggregate supply which
changes the expectations towards future inflation rate.