1. A: What're your favorite sports?

B: Baseball.

2. A: What're your favorite sports?
B: Baseball and soccer.

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Are both questions and answers grammatical?

1 answer

Even though we often pronounce "what are" like "what're," we don't write it that way.

What are your favorite sports?
Baseball, soccer, and golf. (Since the question is asking about SPORTS, which is plural, the answer should be plural in form, too.)