Margot prefers the action of a hockey game to watching ice skating performances. Which revision corrects the faulty parallelism in the sentence? Margot prefers watching active hockey games to the boredom of ice skating performances. Margot doesn't like watching ice skating performances but hockey games. Margot prefers watching a hockey game to watching ice skating performances.

Answer: Margot prefers watching a hockey game to watching ice skating performances.

Explanation:

Parallel structures require both sides of the parallelism to have equal structures. Both elements connected by the preposition to must be of identical grammatical function.

In the case of Margot prefers watching active hockey games to the boredom of ice skating performance. Watching active hockey is a gerund-phrase and on the other side of to there is boredom of ice skating which is a phrase headed by an abstract noun. The same issue is repeated in Margot doesn't like watching ice skating performances but hockey games. Here but coordinates but the two sides hold different structures.

In conclusion, Margot prefers watching a hockey game to watching ice skating performances is the correct version since there are two gerund phrases on each side of TO.