The correct answer is: a) Brahmaputra (Siang)
Pasighat is a city in East Siang district of Arunachal Pradesh, India. It is the headquarters of the district. The city is located on the banks of the Brahmaputra River, about 300 km from Itanagar, the state capital.
The Brahmaputra River is the largest river in India and the third largest river in Asia. It originates in the Himalayas and flows through India, Bangladesh, and China. The river is a major source of water for irrigation and hydroelectric power.
The Lohit River is a tributary of the Brahmaputra River. It originates in the Himalayas and flows through Arunachal Pradesh and Assam. The river is a major source of water for irrigation and hydroelectric power.
The Subansiri River is a tributary of the Brahmaputra River. It originates in the Himalayas and flows through Arunachal Pradesh and Assam. The river is a major source of water for irrigation and hydroelectric power.
The Kameng River is a tributary of the Brahmaputra River. It originates in the Himalayas and flows through Arunachal Pradesh and Assam. The river is a major source of water for irrigation and hydroelectric power.