求助xy13-1的第13题

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.

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.

 为什么选d. 我觉得反而加强了啊，中说的是other state, 不是florida，到other state 的 多了，到florida的就少了

我觉得是D

of the people who moved from one state to another when they retired, the percentage who retired to Florida has decreased

关键是这句话    基数是the people who moved from one state to another when they retired, 也就是总数

题目意思是到佛州,也就是整个总数的比例减少了   比如原先10%  现在只有8%  但是如果原先总数只有10000人 现在增长到了13000 

所以说真正到佛州的人数未必减少 

D说的就是这个意思   The total number of people who retired and moved to another state for their retirement has increased significantly over the past ten years.