Gertrude Kelp owns three boats that participate in commercial fishing for fresh Pacific salmon off the coast of Alaska. As part of her business she hires a captain and several crew members for each boat. In the market for fresh Pacific salmon, there are thousands of firms like Gertrude's. While Gertrude usually catches a significant number of fish each year, her contribution to the entire harvest of salmon is negligible relative to the size of the market.

27. Refer to Scenario 18-2. Labor-market theory assumes that Gertrude's demand for crew members and her supply of fresh Pacific salmon result from her

a. primary goal of maximizing profit.

b. desire to strike a balance between environmental concerns and maximum profit.

c. intrinsic desire to hire crew members.

d. altruistic motives to provide fresh salmon to consumers.