一道老题，但搞不清，拜托！

Over the past five years, the price gap between name-brand cereals and less expensive store-brand cereals has become so wide that consumers have been switching increasingly to store brands despite the name brands’ reputation for better quality.  To attract these consumers back, several manufacturers of name-brand cereals plan to narrow the price gap between their cereals and store brands to less than what it was five years ago.

Which of the following, if true, most seriously calls into question the likelihood that the manufacturers’ plan will succeed in attracting back a large percentage of consumers who have switched to store brands?

There is no significant difference among manufacturers of name-brand cereals in the prices they charge for their products.

Consumers who have switched to store-brand cereals have generally been satisfied with the quality of those cereals.

Many consumers would never think of switching to store-brand cereals because they believe the name brand cereals to be of better quality.

Because of lower advertising costs, stores are able to offer their own brands of cereals at significantly lower prices than those charged for name-brand cereals.

Total annual sales of cereals—including both name-brand and store-brand cereals—have not increased significantly over the past five years

答案是b,搞不懂为什么。   manufacturers of name-brand cereals 打算用价格吸引顾客，和质量有啥关系啊？

斑竹说了，以后MM注意发帖格式吆。

这个题答案B是正确的。

不知道MM注意了没有:consumers have been switching increasingly to store brands despite the name brands’ reputation for better quality

就是说，如果如B所说，Consumers who have switched to store-brand cereals have generally been satisfied with the quality of those cereals.那么，这些消费者如果满意store-brand cereals 的质量，他们就可能不会再转而购买name-brand cereals ，毕竟name-brand cereals 还是贵一些。

因为，name-brand cereals 厂家采取的措施是 to narrow the price gap between their cereals and store brands to less than what it was five years ago。

本题另外一个象答案的选项是D。但是，只要仔细想想，D是不对的。