Correct option is B
The Narmada River is one of the major rivers in India that flows through a rift valley, specifically the Narmada Rift Valley. Rift valleys are formed when tectonic plates move apart, creating a valley between them. The Narmada River originates in Amarkantak on the Madhya Pradesh plateau and flows westward across central India, emptying into the Arabian Sea.
Key Points:
Rift Valley Formation: The Narmada flows through a geological fault known as the Narmada Rift, which runs between the Vindhya and Satpura mountain ranges.
Uniqueness: The Narmada is one of the few Indian rivers flowing in a rift valley, which gives it a westward flow while most rivers in the region flow towards the Bay of Bengal.
Length and Importance: The river stretches for about 1,312 kilometers, making it one of the longest west-flowing rivers in India. The Sardar Sarovar Dam, constructed on the Narmada, is a critical hydroelectric and irrigation project.