For Part A, the correct answer is B. She is jealous that Peter is showing affection to someone else. Mrs. Van Daan's objections stem from her feelings of jealousy regarding the attention and affection that Peter is giving to Anne.
For Part B, the quotation that best supports this answer 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 quote reflects Mrs. Van Daan's feelings of neglect and her concern that Peter's connection with Anne is overshadowing her own relationship with her son, highlighting her jealousy and emotional turmoil.
If you need further clarification or additional context about these characters and their dynamics, feel free to ask!