F: What are you looking at, Jim? ,M: I'm reading an article about the world's homeless population.
(A) F: Are you sure you get information about homeless population from radio? (B) F: How is that? The article is about world's female population. (C) F: Cool. I will watch the TV show about world's homeless population. (D) F: I’m sorry, I don’t understand. Could you say it again?
D