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.
They often spoke in Free Verse
Answer:
A
Explanation:
He didint even say a word and grabbed it
D I think ion really knowwwwww