The preparation of an individual to be capable of making informed decisions when it comes to purchasing products in a consumer culture. Most media messages serve at least one of three purposes—to educate, to entertain, or to persuade—and some fulfill all three at once. The more educated a person is, the higher the level of discretion he will employ in making purchases.
It depends on the type of drug you mean, such as medicinal drugs like marijuana, or bad drugs like cocaine or heroine. But the best answer(in my opinion) is B.
