The primary source of power for industrial production in the antebellum period was:

Lisa eats both pizzas and burritos. If the price of a pizza increases, Lisa's opportunity set

A) becomes larger. B) becomes smaller. C) is unchanged. D) cannot be determined without more information.

]Which of the following describes what would happen after a positive supply shock such as a decrease in world oil prices?

a. An upward shift of the aggregate supply curve as unit costs increase, followed by a gradual decrease in the wage as employment decreases, leading to a downward shift of the aggregate supply curve. b. A downward shift of the aggregate supply curve as unit costs decrease, followed by a gradual increase in the wage as employment increases, leading to an upward shift of the aggregate supply curve. c. An upward shift of the aggregate supply curve as unit costs increase, followed by a gradual decrease in the wage as employment decreases, leading to an upward shift of the aggregate supply curve. d. A downward shift of the aggregate supply curve as unit costs decrease, followed by a gradual decrease in the wage as employment decreases, leading to a downward shift of the aggregate supply curve. e. An upward shift of the aggregate demand curve.