Is it possible to ask for an explanation for this question. I do not understand why the answer is E and not C. Thanks!

admin note: explanation added!

http://classic.7sage.com/lsat_explanations/lsat-20-section-4-question-20/

Someone please help, I still do not know how to do these question types. I have reviewed the curriculum many times, but it is still not sticking.

Any suggestions?