Narmada Valley is an example of

Correct answer: Rift Valley

Explanation: The correct answer is B. Rift Valley. The Narmada Valley is formed due to faulting between the Vindhya Range in the north and the Satpura Range in the south, creating a structural trough or rift. This rift valley runs in an east–west direction, which is unusual in India where most rivers flow north–south. The Narmada flows through this rift and finally drains into the Arabian Sea. Such valleys are the result of vertical displacement of land due to tectonic forces.