a)
A: I think this man probably lives in a forest. He probably lives very close to nature and has a very simple and traditional lifestyle that may include fishing, farming and making handicrafts.
В: I agree. I imagine that if he visited a big city he would be very surprised at what he saw and might not understand how people can live in such a place.
A: I think you’re right. I suppose he would find it noisy and crowded and he would feel frustrated. I think he would be surprised seeing cars on the streets or huge buildings such as skyscrapers.