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.

c

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.

能解释下吗？谢谢

译文:在美国,退休后搬去其它州的人中,去FLORIDA的过去几年中下降3%. 由于FLORIDA的很多产业是为退休族提供的,这个下降会显著副面影响FLORIDA的经济.问哪项最能削弱以上论点.

我想答案是C

D吧

基数变大了，即使比例减小，那么绝对值还是不少的

i think the answer is C. The argument is that the decrease will hurt florida's economy since it mainly caters retiree. But florida has a lot more business than those which caters retiree, then the decrease will not produce noticably negative effect?

So, what is the answer???