The correct answer is C. Bangar.
Bangar is a type of soil that is found in the arid and semi-arid regions of India. It is a light-colored soil that is low in organic matter and nutrients. Bangar soil is also known as saline soil or alkaline soil. It is not suitable for cultivation without proper irrigation and fertilization.
Khadar is a type of soil that is found in the alluvial plains of India. It is a dark-colored soil that is rich in organic matter and nutrients. Khadar soil is also known as black soil or fertile soil. It is suitable for cultivation without any irrigation or fertilization.
Medium soil is a type of soil that is found in the transitional zone between Khadar and Bangar soils. It is a light-brown soil that is moderately rich in organic matter and nutrients. Medium soil is suitable for cultivation with moderate irrigation and fertilization.
None of these is not a correct answer.