The subject is "Maria," because the rest of the sentence is about her.
Answer:
The best revision is:
C. Kyle likes to cook meals for his family, and they enjoy every one.
Explanation:
Notice that this question not only asks us to revise the sentences, but also to maintain their original meaning. There is nothing much concerning the first two, so let's pay attention to the last sentence, "Kyle's family <u>always</u> enjoys his cooking." If Kyle's family ALWAYS enjoys his food, that means they enjoy <u>every one of the meals he cooks</u>. This detail is important, and it is best maintained in option C. Kyle likes to cook meals for his family, and they enjoy every one.
