Question ID:PT89 S2 Q20 Passage:Social observer:  Advertising agencies are willfully neglecting the most profitable segment of the market: older adults. Older adults control more of this nation's personal disposable income than does the rest of the population combined. Therefore, advertising agencies can maximize their clients' profits if they gear their advertisements mainly to older adults.  Stem:Which one of the following, if assumed, would enable the conclusion of the social observer's argument to be properly inferred?  Correct Answer Choice:EChoice A:Older people generally have larger incomes and have had longer to accumulate resources than younger people. Choice B:No company can maximize its profits unless it markets its products primarily to a population segment that controls most of this nation's personal disposable income. Choice C:Advertising that is directed toward the wealthiest people is the most effective means for a business to improve the reputation of its products. Choice D:No advertising agency that tailors its advertisements mainly to an audience that does not control much of this nation's personal disposable income will maximize its clients' profits. Choice E:Any advertising agency that gears its advertisements mainly to a population segment that controls 50 percent or more of this nation's personal disposable income will maximize its clients' profits.