An increase in an economy's capital stock increases its future productive capacity

Which of the following would be counted as investment when calculating gross domestic product?

a) the purchase of a used computer by an auto manufacturer b) the purchase of a share of IBM stock by an employee c) the construction of a new house d) the construction of roads by the government e) the profit earned when selling shares of stock

Assume the economy is experiencing a recessionary gap. Keynesian economists would support which of the following policies:

a. Nonstabilization b. Expansionary c. Nonintervention d. Fixed wage