The correct answer is: B) Black Soil
Black soil is the major soil type found in the Deccan Plateau region of Karnataka. It is also known as regur soil or black cotton soil. It is a deep, well-drained soil that is rich in organic matter and nutrients. It is ideal for growing crops such as cotton, sugarcane, and millet.
Alluvial soil is a type of soil that is formed by the deposition of sediments from rivers and streams. It is a fertile soil that is good for growing crops. However, it is prone to flooding and erosion.
Red soil is a type of soil that is formed from the weathering of rocks that contain iron oxide. It is a poor soil that is not good for growing crops. However, it is used in the manufacture of bricks and pottery.
Laterite soil is a type of soil that is formed from the weathering of rocks that contain aluminum oxide. It is a poor soil that is not good for growing crops. However, it is used in the manufacture of cement and bricks.