Concept:The Ganga-Brahmaputra Basin is a fertile river plain in northern India. It has unique physical features like ox-bow lakes, high population density, and mangrove forests in the delta. Slash and burn agriculture is mainly practiced in tropical rainforests, not in this basin.
Explanation:Option A: Ox-bow lakes are formed when rivers meander. They are common in flat plains like the Ganga-Brahmaputra Basin. So, A is correct.
Option B: The Ganga-Brahmaputra plain is very fertile and supports a high population density. So, B is correct.
Option C: The Sundarbans delta is covered with mangrove forests. This is a well-known feature. So, C is correct.
Option D: Slash and burn agriculture involves cutting and burning forest vegetation to clear land for farming. It is typically practiced in tropical rainforests of central Africa, South America, and Southeast Asia. In the Ganga-Brahmaputra Basin, farmers use permanent fields and irrigation. Therefore, slash and burn is not a feature of this basin. So, D is not correct.
Answer:D. Slash and Burn agriculture is practiced in this area for land cultivation.