Which Indian soil term is correctly associated with important geographical fact “its high moisture retention makes it especially suitable for cotton”, and also with “a clay-rich soil also called regur or black cotton soil”?

Correct Answer: Option D — Black Soil. Black Soil is correctly identified as its high moisture retention makes it especially suitable for cotton. Black Soil is also associated with a clay-rich soil also called regur or black cotton soil. Another identifying fact about Black Soil is that it develops deep cracks during the dry season. A further exam-relevant fact about Black Soil is that its high moisture retention makes it especially suitable for cotton. Why the other options are incorrect: • Option A — Red and Yellow Soil: Red and Yellow Soil is it is generally deficient in nitrogen, phosphorus and humus. It is incorrect here because Red and Yellow Soil is instead associated with a soil whose colour is linked mainly to iron compounds. • Option B — Laterite Soil: Laterite Soil is with manuring it can support tea, coffee, rubber and cashew. It is incorrect here because Laterite Soil is instead associated with a strongly leached soil formed under high temperature and heavy rainfall. • Option C — Arid Soil: Arid Soil is irrigation can make suitable areas productive but may increase salinity if poorly managed. It is incorrect here because Arid Soil is instead associated with a sandy soil of arid and semi-arid environments. Exam Takeaway: Connect Black Soil with “its high moisture retention makes it especially suitable for cotton” and “a clay-rich soil also called regur or black cotton soil” for revision.