According to the text, firms encounter rising costs when they attempt to produce more in the same time period. As a consequence, they must be offered a higher price to be willing to incur these higher costs. The resulting relationship between price and quantity supplied is
A. direct (or positive) and is called the law of demand.
B. inverse (or negative) and is called the law of supply.
C. direct (or positive) and is called the law of human nature.
D. direct (or positive) and is called the law of supply.

D. direct (or positive) and is called the law of supply.

Explanation:

According to the law of supply, when the price of product is increases, then the quantity supplied of that product would also increases and if the price of product is decreases, then the quantity supplied of that product would also decreases. That means it shows a direct or positive relationship between the price and the quantity supplied keeping other factor constant i.e they do not changed.

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.