The grammar rule about this topic says that: The specific antecedents are the nouns that are replaced by the pronouns.
Taking in consideration the above explanation the sentence which the pronoun and antecedent not in agreement is option A.
Jane is planning her college schedule, something you need to do when register for classes.
The pronoun "you" don't replace the antecedent Jane.
B. writing that describes imaginary places
Answer:
B. A part of Jayden wished that he could stay in the sky forever, but he knew that wasn’t possible.