PREP1-31

Manufacturers issue cents-off coupons to get consumers to try their brand of product with the hope that the consumers who try their brand will switch their brand loyalty.  So in the initial marketing of their new brand X, Hartman Industries should issue cents-off coupons, thereby attracting a large segment of potential consumers as loyal customers.

Which of the following, if true, casts the most serious doubt on the likelihood that the marketing strategy recommended above will have the result that is claimed?

(A) Many consumers are unlikely to try new brands of products unless offered an inducement to do so.

(B) The consumers whose purchases are strongly influenced by cents-off coupons tend not to become loyal customers of any particular brand.

(C) Many grocery stores attract customers by doubling the face value of manufacturer's coupons.

(D) Typically less than one-third of the coupons issued by a manufacturer are redeemed by consumers.

      哪位大侠能告诉我D是什么意思？？

(E) A marketing campaign that uses cents-off coupons is most effective when combined with a television advertising campaign.

D翻译：基本上，生产商发行的优惠券，只有少于1/3有被顾客使用了

redeem有履行的意思，就可以解释为使用优惠券

似乎逻辑题选项中出现XX研究表明或者科学家说，XX比例的人如何很少是正确答案

注意问题的这两个单词：

Which of the following, if true, casts the most serious doubt on the likelihood that the marketing strategy recommended above will have the result that is claimed?

对于D,假设是1/4的人用了兑换券，如果这1/4全部变成忠实那这个措施不也算成功吗