Which of the following rivers is joined by river Chambal from the south?

The correct answer is Yamuna.

Let us understand the geographical relationship between the Chambal River and the Yamuna River step-by-step:
1. Origin of River Chambal: The Chambal River originates in the Singar Chouri peak on the northern slopes of the Vindhya Range, near Mhow in Madhya Pradesh, India.
2. Course of River Chambal: From its origin, it flows north-northeast through Madhya Pradesh, runs for a time through Rajasthan, then forms the boundary between Rajasthan and Madhya Pradesh, and finally turns southeast to enter Uttar Pradesh.
3. Confluence: The Chambal River flows from the south and joins the Yamuna River as a major tributary at Bhareh in the Etawah district of Uttar Pradesh.
4. Analysis of Options:
- Teesta: It is a tributary of the Brahmaputra River, flowing through Sikkim and West Bengal before entering Bangladesh.
- Ganga: While the Yamuna is a major tributary of the Ganga, the Chambal does not join the Ganga directly; it flows into the Yamuna first.
- Yamuna: The Chambal River flows from the south (specifically from the Vindhya Range in Central India) and merges directly into the Yamuna River.
- Kosi: It is a transboundary river flowing through Nepal and India, joining the Ganga from the north/east.

Therefore, the river joined by the Chambal River from the south is the Yamuna.