大神们帮我进来看下这题，我越发感觉这个答案解释太牵强

欧文市长

Advertising by mail has become much less effective, withfewer consumers responding. Because consumers are increasingly overwhelmed by the sheer amount of junk mail theyreceive, most discard almost all offers without considering them.Thus, an effective way for corporations to improve response rateswould be to more carefully target the individuals to whom theymail advertising, thereby cutting down on the amount of junkmail each consumer receives. Which of the following, if true, would most support therecommendation above?

(A) There are cost-effective means by which corporationsthat currently advertise by mail could improve response rates.

(B) Many successful corporations are already carefullytargeting the individuals to whom they mail advertising.

(C) Any consumer who, immediately after receiving anadvertisement by mail, merely glances at it, is very likely todiscard it.

(D) Improvements in the quality of the advertising materialsused in mail that is carefully targeted to individuals can improvethe response rate for such mail.

(E) Response rates to carefully targeted advertisements bymail are considerably higher, on average, than response rates tomost other forms of advertising

欧文市长

答案是E选项。。。 但是怎么能拿MAIL的 REPONSE和其他方式的广告比？

欧文市长

假设其他方式的广告形式，如电视，网络，average REPONSE RATE是0.2。  而MAIL广告原本就是0.5， 你carefully targed adverstisement 没有用，反而变成了0.28.  这仍然 considerably higher on average,  than response rates to most other forms of advertising.  怎么证明加强原文观点。 improve response rates?

欧文市长

OG解释说，这句话提供了证据证明targed mail advertising 比 untargeted mail advertising 高，所以他证明了观点的正确

Fiona09

https://gmat.la/question/OG2016-CR-60 传送Helr老师对这题的解析，希望能有所帮助