d. The scientific method cannot be applied to the study of economics.
When monetary and fiscal policymakers expand aggregate demand, which of the
following costs is incurred in the short run?
a. Short-run aggregate supply decreases.
b. The natural rate of unemployment increases.
c. The price level increases more rapidly.
d. The money supply increases less rapidly.
Suppose the multiplier has a value that exceeds 1, and there are no crowding out or
investment accelerator effects. Which of the following would shift aggregate demand to
the right by more than the increase in expenditures?
a. an increase in government expenditures
b. an increase in net exports
c. an increase in investment spending
d. All of the above are correct.