The Nile is the longest river and it is 6853 km long. It's basin is through 10 countries: Burundi, DR Congo, Rwanda, Tanzania, Uganda, Kenya, Ethiopia, Eritrea, Sudan and Egypt.
Khyber Pass- Pakistan
Mount Pidurutalagala- Sri Lanka
Deccan Plateau- India
Mount Everest- Nepal.
The correct answer is B: rugged landscape of mountainous land. The terraces are made so that erosion and surface runoff is reduced and the water that would be lost to surface runoff is properly utilized by the plants.
I think its D hope I helped good day