A、The environmental problem. B、The health problem. C、The educational problem. D、The international problem. A每个选项中都出现了“problem”一词

M: Judy’s taking sixteen credits and working in a computer center too.
W: How she manages to handle all that I’ll never understand.
Q: What does the woman mean?

W: I wonder if our children will Still be able to breathe clean air, drink the clean water and see the blue sky.
M: I agree with you. I think it’s time man learned to live in harmony with the earth instead of just exploiting it.
Q: What are they talking about?