Part A: The correct answer is D. She is jealous that Peter is showing affection to someone else.
Part B: The quotation that best supports the answer to Part A is B. I don’t know what good it is to have a son. I never see him. He wouldn’t care if I killed myself. This reflects Mrs. Van Daan’s feelings of jealousy and neglect regarding her son Peter’s attention towards Anne, indicating her concern about their relationship.