http://7sage.com/lsat_explanations/lsat-20-section-1-question-04/Correct me if I am wrong in my explanation.
*The kind of question this is:* Weaken
*Premise(s):* Marijuana has THC → THC has been found to inactivate herpesvirus (IH) → IH can convert healthy cells into cancer cells.
*Conclusion:* Marijuana can cause cancer.
*What I am looking for:* extra information that we didn’t know about marijuana and its correlation with THC.
*Answer A:* No. That strengthens the argument by showing that scientists had a consensus and the same results.
*Answer B:* Yes. There is information we did not know about marijuana and how it neutralizes THC.
*Answer C:* No. That strengthens the conclusion.
*Answer
* No. Great, but that is only an “IF.” It would still stand that marijuana causes cancer.
*Answer E:* No. Marijuana is beneficial to cancer patients, but it would still cause cancer for none cancer patients.