Which of the following tributaries joins the Brahmaputra River from its left bank within the geographical boundaries of Assam?

💡 Solution & Explanation

The Dhansiri River is a major left-bank tributary of the Brahmaputra, originating from the Laisung mountains of Dima Hasao district in Assam and flowing northward through the valley before joining the main stem. Subansiri, Kameng, and Manas are prominent right-bank tributaries originating in the Himalayan ranges of Arunachal Pradesh and Bhutan. Left-bank tributaries in Assam generally drain the northern slopes of the Meghalaya plateau and the Barail range.