Correct option is D
The Brahmaputra River is an example of antecedent drainage, meaning it existed before the rise of the Himalayas and has retained its course despite the mountain uplift. As the tectonic plates moved and the Himalayas rose, the Brahmaputra, due to its strong flow, continued cutting through the rising terrain, forming deep gorges. This phenomenon is characteristic of antecedent rivers, which maintain their original course while the land around them undergoes tectonic changes. Other rivers like the Indus and the Sutlej also exhibit antecedent drainage. In contrast, rivers like the Ganga and Yamuna are examples of subsequent drainage, as they formed after the Himalayan uplift, adapting their course to the changing topography.
