Final answer:
The subject of this question is Spanish. The question is about whether students like pizza and the correct response is "Sí. Les gusta."
Step-by-step explanation:
The subject of this question is Spanish. The question is asking whether the students like pizza, which is a common topic in language learning. The correct response to the question "¿Les gusta la pizza a ustedes?" is Sí. Les gusta. This means "Yes, they like it." The pronoun "les" refers to the students and the verb "gusta" indicates that they like something.
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