A、The large number of immigrants there. B、The variety of restaurants there. C、Americans’ love of unusual foods. D、The especially

W: What else has made a deep impression on you during your visit to America?
M: Hmm... I should say I’m a little surprised to see so many different kinds of ethnic restaurants in your country.
W: Yeah. In America, you can enjoy the cooking of different countries, such as that of China, Italy, India, and France.
M: Is it because immigrants miss the traditional foods of their native lands?
W: Not necessarily. Some of them open restaurants because they don’t have the skills or qualifications to do anything else when they arrive in the US.
M: Are these ethnic restaurants also popular with native-born Americans?
W: Sure. Americans love to try new and unusual foods.
M: I see. No wonder it is sometimes a bit hard to find a "traditional" American restaurant.
W: You are right. When it comes to food and eating, America truly is a melting pot.
Q6. What impresses the man deeply during his visit in America?