The value of the next-best choice not chosen is called opportunity cost.

A positive externality is shown by a marginal social benefit (MSB) curve that is

A) above and to the right of the demand curve for the good that generates it. B) below and to the left of the demand curve for the good that generates it. C) above and to the left of the supply curve for the good that generates it. D) below and to the right of the supply curve for the good that generates it. E) positively related to both the supply curve and the demand curve for the good that generates it.

Assume the economy is in short-run equilibrium at a real GDP above its potential real GDP. According to classical theory, which of the following policies should be followed? a. The Federal Reserve should use open market operations and buy U.S. government securities. b. The Federal Reserve should not follow a fixed rule

c. The federal government should cut taxes. d. Fiscal policy and monetary policy should not be activist.