Which of the following is the most fertile soil in India?

Answer: Option B

Alluvial soil is the most fertile soil in India. Alluvial soils is are formed by the deposits of the sediments brought by rivers. Most of the rivers originate from the Himalayas and bring along high amount of sediments with them. The soil is made up of particles like silt, sand and clay. It has adequate amount of phosphoric acid, potash and lime. Alluvial soil is of two types - (i) old alluvium known as bangar, and (ii) new alluvium called khaddar. It is the most important type of soil found in the country as it covers about 40% of the total land.