I would say B.

I also tend to agree with B ,but a question if in E instead of word "some" , if "many" was used . Would that be a correct answer?

What I have figured out that sometimes you can just eliminate some choices because of the usage of words like "some","many" etc. ....is that true?

Premise:
Industrial accidents are more common when some of the people in safety-sensitive jobs
have drinking problems than when none do.

Premise:
Since, even after treatment, people who
have had drinking problems are somewhat more likely than other people to have drinking
problems in the future

Conclusion:
any employer trying to reduce the risk of accidents should bar anyone who has ever been treated for a drinking problem from holding a safety-sensitive
job.

The conclusion is that an employer should bar people treated and not necessarily people who drink. If you drink and never go get treatment you can still work.

B. Many accidents in the workplace are the result of errors by employees who do not
hold safety-sensitive jobs.

This doesn't add any new information and therefore cannot be correct. The premise already stated that it was common for accidents to be the cause of people who drink. Therefore some accidents have to be commited by people who don't drink. Many does not give any real reference. How many is 'many'? If 15 out 100 accidents were by non drinkers could this be refered to as many? Yes, so this add no new information.

C. Workers who would permanently lose their jobs if they sought treatment for a
drinking problem try instead to conceal their problem and continue working for as
long as possible.

This attacks the true argument. If you say you will not hire people who go for treatment and everyone decides not to go to treatment then you aren't really doing anything. In fact you may be hurting yourself because now the drinkers still work at you company but yet they aren't getting the treatment they need to help them get better.

i am going with C..

if the company is trying to reduce risk by eliminating people with drinking issues..then C weakens it most..

the argument talks about risk vs saying we need to reduce accidents..

I'm going with C
_________________

MBA Blog: University of Minnesota Carlson School of Management- http://unconventionalapplicant.blogspot.com/

OA: C Thanks

I exceeded 3 minutes on this question, which is bad.

I choose C.

First I thought the answer is D, but now I see why the correct answer is C.

Thanks