1. The Greek root -hor- means “time.” What kind of tool or device might someone use in the field of horometry? 2. The Greek root -opt- means “eye” or “sight.” Why might someone visit a person who practices optometry?

Explanation:

Two answers that just came from the top of my head.

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.  

op: object of preposition