Which of these is a characteristic of romantic poetry that the imagists rejected?

Imagists rejected the flowery language. 'Flowery language' is an exceptionally detailed, elaborate, and frequently wonderful/abstract method for talking or composing. It is the inverse of plain, straightforward language.  

On the off chance that a discourse or composing style is extravagant, it utilizes too many confounded words or expressions trying to sound skilful.  

there is no passage.

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.