M: Would you please tell me about your best holiday, Nancy? W: Well, it was my trip in Nepal. We went there 10 years ago, doing some walking in the mountains. M: How long did you stay there? W: 20 days. M: 20 days! That's a long time. How far did you walk every day? W: Perhaps 15 kilometers. You have to climb up and down a lot every day. M: So, it was very hard. W: Yes, very hard. Sometimes, it's difficult to walk in the mountains where the air is very thin, and you have a lot of problems when breathing. M: What kind of equipment did you take? W: Not much. Only a bag, a sleeping bag and some warm clothing. We carried all the things by ourselves. M: And how was the food? W: There was rice and some vegetables, normally no meat. But it was good. M: What was the best thing about the trip? W: The walking and the exercise. I hate sitting in the sun and like to be out in the countryside. The air is very clean and it's very quiet. Nepal is a good place. You must go!, Question: What did the woman enjoy most about the trip? (A) Clean air. (B) Delicious food. (C) Beautiful sunshine.
(A) Clean air.