Of the people who moved from one city to another when they got a job, the percentage who moved to San Diego has decreased by three percentage points over the past ten years. Since many local businesses in San Diego cater to working professionals, 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?
The total number of people who got a job and moved to another city for work has increased significantly over the past ten years.
There are far more local businesses in San Diego that cater to tourists than there are local businesses that cater to working professionals.
The number of people who move out of San Diego to accept employment in other states has increased over the past ten years.
San Diego attracts more people who move from one city to another when they get a job than does any other city.
The number of people who left San Diego when they got a job and moved to another city was greater last year than it was ten years ago.
On this Critical Reasoning question, I reached the answer, but I wanted to find out your thoughts on rejecting the other answer choices.