Your father joins the American Automobile Association (AAA), popularly known as Triple A, a nonprofit interest group for motorists. Although he pays annual dues to the organization, he explains to you that he appreciates knowing that if he ever has car trouble or an accident anywhere in the country, he can call AAA for roadside assistance. Which type of incentive appears to be motivating your father to participate in this interest group?
a. Material incentive.
b. Solidary incentive.
c. Purposive incentive.
d. Collective incentive.