The correct answer is: D. None of them.
Damodar is a river in eastern India. It originates in the Chhotanagpur Plateau in Jharkhand and flows through West Bengal before joining the Hooghly River near Kolkata. The river is about 550 kilometers long and has a drainage basin of about 26,000 square kilometers.
The river is a major source of water for irrigation and drinking water in the region. It is also a popular destination for fishing and boating.
The river is not located in any of the options given. Option A, Karst topography, is a type of landscape that is characterized by limestone caves and sinkholes. Option B, rift valley, is a long, narrow depression in the Earth’s surface that is formed by the movement of tectonic plates. Option C, marshy region, is an area of land that is saturated with water and has a high water table.
The Damodar river is a major river in eastern India. It is a source of water for irrigation and drinking water, and is also a popular destination for fishing and boating. The river is not located in any of the options given.