by ohthatpatrick Mon Feb 03, 2014 2:09 am
Right, (E) weakens because it offers a potential explanation for why there may have GENUINELY been a sharp increase in injuries right before the factory closed. ("maybe the workers knew the factory was about to close, they got depressed, they were more prone to injuries, they suffered more injuries, and that's why there was a sharp increase in claims")
I think you're demanding too much out of a Weaken answer. You were saying that (E) doesn't weaken since we aren't ACTUALLY told that these depressed workers suffered any injuries.
The correct answers to Weaken don't PROVE the author was wrong. The correct answers to Strengthen don't PROVE the author was right.
The correct answers to these questions just increase or decrease the overall plausibility of the argument.
In answer choice (A), we're saying it weakens because it allows us to object, "Hey, maybe some of these injury claims were for hearing loss, in which case the workers HAVE to wait until they leave the job to make the injury claim."
Notice, though, that (A) never told us that any of these factory workers ACTUALLY had hearing loss.
So we have no PROOF that any of the claims filed from former employees had anything to do with hearing loss.
But (A) has introduced that DOUBT into our minds, that POSSIBILITY that maybe some of the claims WERE due to hearing loss. That possible doubt is enough to weaken an argument.
(B) suggests that employees might have been scared to file an injury claim while they still had jobs because other employees who filed injury claims had been fired in the past. Does (B) actually say that employees might have been scared? Do we know that any employees with legitimate injuries waited until the factory closed to file claims, because they were too scared to file a claim while they were working? No. But (B) has introduced that possibility.
Does that make sense? (E) is doing the same thing ... it's giving us a possible story to tell that would weaken.