Explanation: The Brahmaputra River is one of the most significant rivers in India, particularly in the northeastern region. It originates in the Angsi Glacier in the Himalayas, located in the Tibet Autonomous Region of China. The river is known by different names along its course: in Tibet, it is called the Yarlung Tsangpo, and after entering India through Arunachal Pradesh, it is known as the Siang. The Brahmaputra is a transboundary river, flowing through Tibet, India, and Bangladesh.
The Brahmaputra River enters India through the easternmost state of Arunachal Pradesh, specifically at the border with Tibet. It then flows through the state in a southerly direction, forming the eastern boundary of Arunachal Pradesh. The river is characterized by its deep gorges and swift currents, which make it a challenging but important waterway for the region.
In Arunachal Pradesh, the Brahmaputra is a vital resource for agriculture, fishing, and transportation. The river also plays a significant role in the cultural and economic life of the state. As it moves through Arunachal Pradesh, the Brahmaputra receives several tributaries, including the Dibang and Lohit rivers, which further enrich its flow.
Understanding the course of the Brahmaputra River is essential for comprehending the geography of northeastern India. The river's unique path through the Himalayas and its significant role in the region make it a key feature in the study of Indian geography. Students should be aware of the river's origin, its course through Arunachal Pradesh, and its importance to the region's economy and ecology.
In summary, the Brahmaputra River is the correct answer as it is the major river that enters India through Arunachal Pradesh, distinguishing it from other major rivers like the Ganga, Son, and Kaveri, which have different origins and courses.