The slope of the production possibilities frontier is

Refer to Figure 4-1. Arnold's marginal benefit from consuming the fourth burrito is

A) $0. B) $1.00. C) $2.50. D) $3.00.

The notion of reciprocity means that one nation will impose import restrictions on another in order to:

a. stimulate an increase in trade restrictions in the latter. b. stimulate a decrease in trade restrictions in the latter. c. eliminate trade restrictions immediately in both countries. d. improve the government revenue collections through tariffs in both countries. e. enforce standards of product quality in the latter.