The correct answer is A. Parbati river.
Manikaran is a village in Kullu district of Himachal Pradesh, India. It is a popular tourist destination known for its hot springs. The hot springs are situated on the bank of the Parbati river. The water in the hot springs is said to have medicinal properties. It is believed to be beneficial for treating skin diseases, rheumatism, and other ailments.
The Parbati river is a tributary of the Beas river. It originates in the Pir Panjal Range and flows through the Kullu Valley. The river is a popular destination for rafting and kayaking.
The Tons river is a tributary of the Yamuna river. It originates in the Garhwal Himalayas and flows through the Chamba district of Himachal Pradesh. The river is a popular destination for fishing and white-water rafting.
The Beas river is a tributary of the Sutlej river. It originates in the Pir Panjal Range and flows through the Kullu Valley, Kangra Valley, and Punjab. The river is a popular destination for fishing, rafting, and kayaking.
The Sukli river is a tributary of the Beas river. It originates in the Dhauladhar Range and flows through the Kullu Valley. The river is a popular destination for fishing and white-water rafting.