The correct answer is Ravi. Key Points About Ravi River: The Ravi is born as a joint stream generated by the glacier feeds Bhadal and Tantgari that begins in Bara Banghal, Kangra district. It rises in the west of Rohtang Pass in the Kullu hills of Himachal Pradesh and flows through the Chamba valley of the state The river has a catchment area of roughly 5,451 square kilometres and is around 158 kilometres long (98 miles) . Chamba lies on its right bank. Additional Information About Chenab River: The Chenab River, the largest river (in terms of volume of water), is formed by the confluence of two streams, Chandra and Bhaga, at Tandi, in Lahaul. Before entering Jammu and Kashmir, it runs 122 kilometres (76 miles) and covers an area of 7,500 square kilometres (2,900 square miles) in Himachal Pradesh.​​ About Sutlej River: The Sutlej River originates in distant Tibet. The river flows through the Himalayan and Zaskar ranges and passes the Indo-Tibetan border (near Shipkila). Then, from the north, the river Spiti enters Sutlej, and from the south, the Baspa. It emerges from the mountains in Bhakra, passing through gorges. Sutlej's catchment area in Himachal Pradesh is around 20,000 square kilometres (7,700 sq mi).​ About Beas River: Beas is a tributary of the Indus river and a part of the Indus river system. It begins near the Rohtang Pass on the southern end of the Pir Panjal Range and flows about 256 kilometres (159 mi) in Himachal Pradesh. It is 460 kilometres long and flows entirely within Indian territory.