The Barak River originates in the hills of:

Manipur
Nagaland
Mizoram
Assam

The correct answer is Assam.

The Barak River is a major river in northeastern India. It originates in the hills of Manipur and Nagaland, and flows through the states of Assam and Mizoram before joining the Brahmaputra River. The Barak River is a major source of water for irrigation and drinking water in the region. It is also a popular destination for fishing and boating.

The Barak River is a tributary of the Brahmaputra River. It is the second longest river in Assam, after the Brahmaputra. The Barak River is about 500 kilometers long. It originates in the hills of Manipur and Nagaland, and flows through the states of Assam and Mizoram before joining the Brahmaputra River.

The Barak River is a major source of water for irrigation and drinking water in the region. It is also a popular destination for fishing and boating. The Barak River is home to a variety of fish species, including carp, catfish, and mahseer. The river is also home to a variety of birds, including herons, storks, and kingfishers.

The Barak River is a beautiful and important river in northeastern India. It is a major source of water for the region, and it is also a popular destination for recreation.