Correct Answer: Yamuna

Solution : The correct answer is Yamuna .

The important tributaries of the Yamuna River are Tons, Chambal, Hindon, Betwa, and Ken. Other small tributaries of the Yamuna River include the Giri, Sind, Uttangan, Sengar and Rind. The Yamuna is the second-largest tributary river of the Ganges by discharge and the longest tributary in India. It merges with the Ganges at Triveni Sangam, Prayagraj.