Step 1: About black soil.
Black soil, also known as Regur soil, is rich in clay content and retains moisture. It is ideal for cotton cultivation.
Step 2: Analyzing the options.
(A) Jharkhand: Known for red and laterite soil.
(B) Maharashtra: Correct — black soil is widespread here, especially in the Deccan Plateau.
(C) West Bengal: Dominated by alluvial soil.
(D) Arunachal Pradesh: Mostly mountain and forest soils.
Step 3: Conclusion.
Therefore, black soil is found in Maharashtra.