The mighty Brahmaputra River flows through Assam and then enters:

The correct answer is: b) Bhutan.

The Brahmaputra River is the main river in the Brahmaputra River basin, which is the largest river basin in India. The river originates in the Himalayas in Tibet and flows through India, Bangladesh, and Bhutan. The Brahmaputra River is a major source of water for irrigation and drinking water for millions of people in the region. It is also a major transportation route.

The Brahmaputra River is a very important river for the people of the region. It is a source of water, food, and transportation. The river is also a major tourist attraction.

Here is a brief explanation of each option:

• Option a: China. The Brahmaputra River does not flow through China.
• Option b: Bhutan. The Brahmaputra River flows through Bhutan.
• Option c: Bangladesh. The Brahmaputra River flows through Bangladesh.
• Option d: Myanmar. The Brahmaputra River does not flow through Myanmar.