Answer: The best team, but the worst player.
Explanation:
I also agree that the answer is B: whom
in this sentence you are using the preposition + whom grammar structure. Whom is considered an object pronoun and is used when asking who will receive the action, which in this case, I believe is, baking those cookies. Hopefully this makes sense and good luck.
<span>The above statement is an example of the Faulty Analogy fallacy. The players don't necessarily need to be outrageously talented. Baseball is a team sport. As such they could be an outrageously talented TEAM.</span>