This might explain why older people control most of this nation’s personal disposable income. But (A) doesn’t establish that targeting ads toward this group of people will maximize profits. Older people might not spend as much in response to ads compared to other groups of people.

(B) establishes that if a company does NOT market its products toward a population that controls most of the disposable income, then a company will NOT maximize its profits. But we’re trying to establish that if a company DOES gear its ads toward a population that controls most disposable income, that it CAN maximize its profits.

(C) can establish that a particular advertising strategy would do the best to “improve the reputation” of a company’s products. But this doesn’t establish what can maximize profits.

(D) establishes that if you tailor your ads to people who don’t control a lot of disposable income, you won’t maximize clients’ profits. But we’re trying to establish companies CAN maximize profits by targeting a certain group.

Older adults control more than 50% of the nation’s disposable income (because they control more than does the rest of the population combined). (E) establishes that gearing ads toward this group of people will maximize profits.