Final answer:
The good weather conditions during the summer of 2015 had a positive impact on the quantity and price of salmon in the California commercial fishing market.
Step-by-step explanation:
The good weather conditions during the summer of 2015 had a positive impact on the quantity and price of salmon in the California commercial fishing market. The heavy rains increased the water levels in the rivers, creating a better breeding environment for salmon. Cooler ocean temperatures led to the growth of plankton, which provided a sufficient food supply for salmon and other organisms in the ocean food chain. As a result, there was an increase in the supply of salmon, leading to a higher equilibrium quantity of salmon bought and sold in the market at a lower price.