Moki Hunt recently purchased Swift Waters Adventures, a kayaking and canoeing rental business near the Salt River in Arizona. Swift Waters Adventures had been in operation for five years and was located in an ideal area. Even though the winters in the area can be cold, kayaking and canoeing activities are generally popular year-round. After two months of operation, it became clear why the previous owners had sold the business. While the business appeared to be ideally located, sales were extremely disappointing. Before administering the questionnaire, Moki discovered through talking to other sports rental businesses that, although retired males made up a small percentage of the area's population, they often rented kayaks and canoes. In light of this, Moki decided to include a minimum of 25 percent retired males in his sample. The final choice of respondents was left up to the interviewers. This sampling method is known as sampling.
a. quota
b. stratified
c. random
d. representative
e. area