Why do we use adjectives in sentences

Explanation:

We use them to give detail to the noun that we are describing. For example: she was a woman. ( this is kinda obvious because it starts with she, but we need more details so we would say. ) she was a young woman. this will help us describe her better in details when telling a story.

Hope that helps

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.