Explanation:

 1.   A rift valley is a linear-shaped lowland between several highlands or mountain ranges created by the action of a geologic rift or fault. A rift valley is formed on a divergent plate boundary, a crustal extension, a spreading apart of the surface, which is subsequently further deepened by the forces of erosion.  Narmada river flows from above mentioned rift valley.

2.  The Chhattisgarh plain is a saucer shaped depression drained by the upper Mahanadi. The whole basin lies between the Maikala Range and the Odisha hills.  The basin is laid with nearly horizontal beds of limestone and shales.

3.  Chotanagpur plateau represents the north-eastern projection of the Indian Peninsula. The Son river flows in the north-west of the plateau and joins the Ganga. The average elevation of the plateau is 700 m above sea level.  This plateau is composed mainly of Gondwana rocks.

4.  Eastern side of western ghats represents the rain shadow region.  A rain shadow is a dry region of land on the side of a mountain range that is protected from the prevailing winds.