Isha says everyone would obviously rather live on a plain, so people in mountain and plateau…

Why

Isha has noticed something true — plains are convenient, and more people do live on them — and then assumed convenience is the only thing that matters, so anywhere less crowded must be worse. Each landform offers something plains do not. Mountains give cooler summers, forests and hydro-power from fast rivers, tourism, and crops that need cool air or slopes, like tea, apples, and many spices. Plateaus hold most of a country's minerals and are mined heavily. People in these regions have built ways of life around those advantages, not around a lack of them. Test it: many hill towns are wealthy from tourism and tea, and mineral-rich plateau districts supply the coal and iron the plains' factories run on — these are strengths, not signs of being stuck. His teacher is right: plains suit some activities best, but mountains and plateaus have their own real advantages — living there is a choice shaped by what those landforms offer, not a failure.