Step 1: Match (A) with Darcy's law since it deals with saturated flow through porous media.
Step 2: Match (B) with Stokes' law since it deals with particle settling in textural analysis.
Step 3: Match (C) with Wien's law (radiation-temperature relation) and (D) with Fick's law (diffusion).
Correct option: (A)-(II), (B)-(IV), (C)-(I), (D)-(III).