To solve multi-component grid puzzles, isolate the simplest tile (like the 3-cell Green tile) and track its rotation. This single-point analysis usually helps eliminate most incorrect options instantly.
Step 1: Find the motion rule. Track how each coloured L-tile rotates or shifts across the 4x4 sequence. Step 2: Fill the gap. Apply the rule to the missing cell. \[ \boxed{\text{Option 3 (Fig C)}} \]