The correct answer is: a) Barak River
The Barak River is the largest river in Manipur, India. It originates in the Manipur Hills and flows through the state of Assam before joining the Brahmaputra River. The Barak River has a number of existing and potential hydropower projects.
The Irrawaddy River is the largest river in Myanmar. It originates in the Kachin Hills and flows through the states of Shan, Kayah, Kayin, Bago, and Ayeyarwady before emptying into the Andaman Sea. The Irrawaddy River does not have any hydropower projects in Manipur.
The Brahmaputra River is the largest river in India. It originates in the Himalayas and flows through the states of Arunachal Pradesh, Assam, Nagaland, Manipur, and Meghalaya before joining the Ganges River in Bangladesh. The Brahmaputra River does not have any hydropower projects in Manipur.
The Chindwin River is a tributary of the Irrawaddy River. It originates in the Kachin Hills and flows through the states of Shan, Kachin, and Sagaing before joining the Irrawaddy River. The Chindwin River does not have any hydropower projects in Manipur.