Which of the following government actions is appropriate in a market with an external benefit?

Since the National Basketball Association is the only significant employer of professional basketball players, it might be referred to as a(n)

A) oligopsony. B) monopoly. C) monopsony. D) oligopolist.

If a firm makes zero economic profit, then the firm

A) has total revenues greater than its economic costs. B) must shut down. C) can be earning positive business profit. D) must have no fixed costs.