Step 1: Fine clay and silt moving from the upper to the lower profile is the process of eluviation followed by illuviation. Step 2: Saline soils, Regur and Kankar are defined by salt accumulation, in-situ basaltic weathering and CaCO3 nodules respectively, none of which match this process. Step 3: The soil left coarse-textured on top due to this leaching is called a Karsi soil. Correct option: Karsi soils.