Final answer:
The revision correcting the faulty parallelism is 'Margot prefers watching a hockey game to watching ice skating performances' because it aligns the grammatical structure of the two compared activities.
Step-by-step explanation:
To correct the faulty parallelism in the sentence, the best revision is: Margot prefers watching a hockey game to watching ice skating performances. This revision aligns the structures of the compared actions by using the same form of the verb 'watching' for both hockey games and ice skating performances, ensuring that the parallel structure is maintained. Parallelism enhances clarity by giving the sentence a more rhythmical and balanced flow.
Parallel structure in writing allows for easier comprehension and a smoother flow, which is why revising sentences to include a clear doer and action is vital. In the revised version, Margot is clearly the doer, and the action she prefers is watching hockey opposed to ice skating. This matches the pattern of sentence improvement where an action by a doer is made explicit for a more direct and engaging statement.