The wheat-growing regions of Madhya Pradesh often have:

Black cotton soil
Alluvial soil
Red soil
Mixed red and black soil

The correct answer is: A) Black cotton soil.

Black cotton soil is a type of soil that is rich in organic matter and nutrients. It is well-drained and has a high water-holding capacity. This makes it ideal for growing wheat, which is a thirsty crop.

Alluvial soil is a type of soil that is formed from the deposition of sediments by rivers. It is a nutrient-rich soil that is well-drained and easy to work. However, it can be prone to erosion.

Red soil is a type of soil that is formed from the weathering of rocks. It is a nutrient-poor soil that is not well-drained. This makes it unsuitable for growing wheat.

Mixed red and black soil is a type of soil that is a mixture of red soil and black cotton soil. It is a nutrient-rich soil that is well-drained and has a high water-holding capacity. This makes it ideal for growing wheat.

In conclusion, the wheat-growing regions of Madhya Pradesh often have black cotton soil. This type of soil is rich in organic matter and nutrients, and it is well-drained and has a high water-holding capacity. This makes it ideal for growing wheat.