If you had been the great chief would you have pulled up the great tree

the sentence that avoid faulty coordination is:

culture, which is well represented in philadelphia, plays a major role including theatre, music, and the visual arts.  

faulty coordination occurs when the writer gives equal importance two different ideas (clauses) which in fact are not equivalent. in order to correct a misplaced clause or idea, the writer can place less important or emphatic ideas in a relative clause as in the previous sentence.  

i believe the answer is d : )

sigh language, body language, and voice telepathy

i would say that it is a bad thesis because it doesn't explain what the health risks are. it seems to be a very vague thesis statement. thesis statements need to set up for the entire essay. it needs to give the reasons why people need to stop drinking diet soda.   so, i would say that it is a bad thesis.

hope this