M: So you are to leave all of us. How can you do that? What shall we do without you? W: Don't worry. I'll be back in five or six days. M: What are you going to do there? W: Some people are in great need of help after the flood. Being a doctor, I have the responsibility to help those in trouble. M: That's true. But you often go to those dangerous places and we are all worried about your safety, mum. W: Don't be so troubled. I'm a doctor. I know how to care for myself. What worries me is your life and study at school. Are you used to the life in the school? M: Yes. But many classmates have their mothers or fathers pick them up after school. I have to go and come all by myself. W: I'm sorry, dear. I'll ask your father to be back when I'm away. Maybe he can manage a few days off from his manager. I must go right now. The bus is waiting out over there. Bye-bye., Question: Why is the mother leaving? (A) Because there is going to be a flood. (B) Because she is going to help the flooded people. (C) Because she is going to look after the patients in the hospital.
(B) Because she is going to help the flooded people.