This question is asking " Who is the daughter of your parents?"
The answer would be Yo soy la hija de mis padres.
The correct answer is aquella, because we would use the word if there was a difference in the distance. Like if you were in the right corner of a room, and the guitar was at the left corner of the room. And another reason is because aquella is feminine and in spanish, guitar is feminine.
I believe the correct answer is B
