The correct answer is: C. Karewa Soil
Karewa soil is a type of alluvial soil that is found in the Kashmir Valley. It is a very fertile soil and is used for agriculture. The soil is formed from the deposition of silt and clay by the Jhelum River. It is a dark brown or black soil and is rich in organic matter. The soil is also rich in nutrients, such as nitrogen, phosphorus, and potassium.
Red soil is a type of soil that is found in the hilly areas of Kashmir. It is a poor soil and is not suitable for agriculture. The soil is formed from the weathering of igneous rocks. It is a reddish-brown soil and is low in organic matter. The soil is also low in nutrients, such as nitrogen, phosphorus, and potassium.
Highland soil is a type of soil that is found in the high mountains of Kashmir. It is a very poor soil and is not suitable for agriculture. The soil is formed from the weathering of rocks. It is a light brown or gray soil and is low in organic matter. The soil is also low in nutrients, such as nitrogen, phosphorus, and potassium.
None of these is the correct answer because it does not specify which soil is economically very important in Kashmir.