Firms use various methods for identifying customers such as and
a. observable characteristics such as age; their actions such as willingness to wait in long lines
b. observable characteristics such as willingness to wait in long lines; their actions such as whether or not they live a long time
c. the color of their hair; whether or not they roll their eyes at high prices
d. none of the above.

The correct answer to the following question is option A) .

Explanation:

One way in which firms identify customer is through observational characteristics which can be age, by knowing the average of their target customers , a firm can know whether their target customers would be willing to wait in long lines or not for getting the firms product. As if their target customers mainly consists of old age then those customer won't be willing to wait in long lines to get the product.

the answer is     d. in our global economy, most job growth will be in services, but manufacturing jobs will exist, too.

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.