Which river in India flows in a rift-valley?

A. Narmada

B. Krishna

C. Cauvery

D. Tapti

Ans. (A) Narmada

Explanation:

 It is the only river in India that flows in a rift valley, flowing west between the Satpura and Vindhya ranges. The Tapti River and Mahi River also flow through rift valleys, but between different ranges.