The correct answer is: d) All of the above.
The Brahmaputra River is the main source of hydropower projects in Arunachal Pradesh. Its major tributaries include the Subansiri, Kameng, and Lohit rivers.
The Subansiri River is the largest tributary of the Brahmaputra River. It originates in the Himalayas and flows through Arunachal Pradesh and Assam. The Subansiri River is a major source of hydroelectric power in India.
The Kameng River is another major tributary of the Brahmaputra River. It originates in the Himalayas and flows through Arunachal Pradesh and Assam. The Kameng River is a major source of hydroelectric power in India.
The Lohit River is the third major tributary of the Brahmaputra River. It originates in the Himalayas and flows through Arunachal Pradesh and Assam. The Lohit River is a major source of hydroelectric power in India.
The Brahmaputra River and its tributaries are a major source of hydroelectric power in India. The Subansiri, Kameng, and Lohit rivers are all major tributaries of the Brahmaputra River and are all sources of hydroelectric power.