Q13:
In the United States, of the people who moved from one state to another when they retired, the percentage who retired to LACE w:st="on">FloridaLACE> has decreased by three percentage points over the past ten years. Since many local businesses in LACE w:st="on">FloridaLACE> 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?
- LACE w:st="on">FloridaLACE> attracts more people who move from one state to another when they retire than does any other state.
- The number of people who move out of LACE w:st="on">FloridaLACE> to accept employment in other states has increased over the past ten years.
- There are far more local businesses in LACE w:st="on">FloridaLACE> that cater to tourists than there are local businesses that cater to retirees.
- 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。。 | 
