The law of diminishing marginal utility helps to explain why supply curves are generally upward sloping

Which of the following statements in the context of U.S. exports is true?

a. The U.S. exports products produced in the low wage industries. b. Primary products account for the largest share of U.S. exports to developed nations. c. The U.S. mainly exports labor intensive goods. d. Most U.S. exports are produced in high-wage industries. e. A bulk of U.S. exports to developing nations comprise of perishable commodities.

Econville suffers from a massive earthquake and tsunami that destroys a fourth of its physical resources. What happens to the production possibility frontier?

a. The production possibility frontier does not change. b. The production possibility frontier shifts to the right. c. The production possibility frontier shifts to the left. d. The production possibility frontier shifts down for capital goods but does not change for consumer goods.