Madison Kelp owns three boats, which participate in commercial fishing for fresh Pacific salmon off the coast of British Columbia. As part of her business, she hires a captain and several crewmembers for each boat. In the market for fresh Pacific salmon, there are thousands of firms like Madison's. While Madison 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.

Refer to Scenario 18-1. In the fresh Pacific salmon product market, what does Madison control

a .the price she charges for her fresh salmon

b .the competitive environment of the market

c .the wage she pays her workers

d. .the quantity of fresh salmon that she catches and supplies to the market