Which Landforms term is correctly associated with formation process: “formed by river-borne sediments”, and also with “generally has fertile soils”?

Correct Answer: Option B — Alluvial plain. Alluvial plain is correct because it is formed by river-borne sediments. Alluvial plain is also associated with generally has fertile soils. A further identifying fact is that Alluvial plain is generally has fertile soils. Another useful fact is that Alluvial plain is associated with the Indo-Gangetic Plain is a major example. Why the other options are incorrect: Option A — Delta: It is formed where sediment accumulates as a river enters standing water and is associated with distributaries commonly develop across it; those are the identifying facts of Delta. Option C — Meander: It is formed by outer-bank erosion and inner-bank deposition and is associated with common in the middle and lower course of rivers; those are the identifying facts of Meander. Option D — Oxbow lake: It is formed when a meander loop is cut off from the river and is associated with usually lies on a floodplain; those are the identifying facts of Oxbow lake. Exam Takeaway: Link Alluvial plain with “formed by river-borne sediments” and “generally has fertile soils” for quick revision.