In a long-run equilibrium in a perfectly competitive market, firms are selling at a price equal to marginal cost

Based on research conducted on the productivity of Hispanic and non-Hispanic workers, an employer decides to hire non-Hispanic workers. This is an example of:

A) cultural discrimination. B) special interest group discrimination. C) statistical discrimination. D) taste-based discrimination.

Specialization in trade will be economically efficient if it is based upon

A) national security needs. B) absolute advantage. C) comparative advantage. D) government regulations.