Some of the services offered by Boyle's gyms, especially those provided by individual trainers, may vary in quality, which is best described as .

a. Heterogeneity

Explanation:

Heterogeneity refers to the quality of various thing varying in their character and fundamental way of existence. It simply refers to diversity. The Individual Trainers are different people and as such they have different mindsets and ways of doing certain things. As such, they cannot be expected to provide the exact same service. The services they provide will vary but probably not by much.

answer: in the short-run firms will respond by raising the price of turkey.

explanation: initially the long-run equilibrium is at a price of $5 per pound of turkey and a quantity of 50 million pounds per year. now, when webmd claims that a protein found in turkey will increase your expected lifespan by 4 years. the consumers demand for turkey will increase at every price shifting the demand curve to the right from d1 to d2. while, there will be no change in the supply curve in the short-run as it is not possible for producers to adjust supply so quickly. as a result the new equilibrium will occur at a higher price and a higher quantity of turkey.

thus, in the short run firms will respond by increasing the price of turkey, selling more quantity at a higher price and earning economic profits.