A、Population explosion. B、Generation Gap. C、Problem of the aged. D、Climate changes. C

W: Is it possible to make a comfortable living from art today? I mean, while you’re not well-known.
M: A good many of us go in for commercial art nowadays.
Q: What can be inferred from the conversation?

W: Could we talk a little about the problem of the old? I wonder if you could begin by telling us the importance of this problem.
M: Well, of course it is an increasingly serious problem, I mean a fairly large part of the old population becomes confined to the house. They cannot go out, because they don’t want to trouble others, thus little by little they become a burden to the younger generation.
Q: What are the speakers talking about?