Q13:

In the United States, of the people who moved from one state to another when they retired, the percentage who retired to Florida has decreased by three percentage points over the past ten years. Since many local businesses in Florida cater to retirees, this decline is likely to have a noticeably negative economic effect on these businesses.

Which of the following, if true, most seriously weakens the argument?

1. Florida attracts more people who move from one state to another when they retire than does any other state.
2. The number of people who move out of Florida to accept employment in other states has increased over the past ten years.
3. There are far more local businesses in Florida that cater to tourists than there are local businesses that cater to retirees.
4. The total number of people who retired and moved to another state for their retirement has increased significantly over the past ten years.
5. The number of people who left Florida when they retired to live in another state was greater last year than it was ten years ago.

为啥答案是D， 不是C呢？ 如果旅游业大大超过退休者商业， 那么总体商业就不会受大影响啊。。

Since many local businesses in Florida cater to retirees, this decline is likely to have a noticeably negative economic effect on these businesses.

特指这些cater to retirees的businesses吧

非常感谢， 对， 我居然漏看了这么重要的 these, 那么C确实是错的。。。

真的是很愚蠢的一个问题。 我这真是非常晕菜。。。。

非常感谢您的回答。。

这题的d不是很明白，它说过去十年退休后到其他州生活的总人数大幅增加了，那是不是说因为总的人数增加了，所以即使下降了3%，但退休后去florida的绝对人数不一定会下降的，所以削弱结论呢？

高手请指教！