Correct option is A
Robinson is associated with the Pipette method for soil particle size analysis.
Yoder developed the wet sieving method to assess soil aggregate stability.
Munshell (Munsell) chart is used to determine soil color.
Atterberg limits refer to consistency limits (liquid, plastic, and shrinkage limits) for soil classification.
Correct match: A–III, B–IV, C–I, D–II.