Which sentence contains a linking verb? coach tony has broken his hockey stick on the ice.
the hockey players have been anxious about the match.
the children are playing hockey on the frozen pond.
ellen could have chased the hockey puck into the corner.

The children are playing hockey on the frozen pond.

Explanation:

Linking verbs are the verbs which shows a relationship between the sentence complement and the subject. The linking verbs helps in elaborating, describing or identifying the subject. At last, it helps in establishing existing condition or relationship of the subject. In the above sentence, the linking verb is 'are'. Herein, the linking verb 'are' identifies the current state of children on the frozen pond.

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.  

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