Step 1: Concept In a mower, the cut crop must be moved away from the standing crop to provide a clear path for the next round of cutting.
Step 2: Meaning A component is attached to the outer shoe of the cutter bar for this purpose.
Step 3: Analysis The grass board (or swath board) is a flat board set at an angle that sweeps the cut grass inward, away from the uncut crop, creating a "windrow".
Step 4: Conclusion The grass board is the component that directs the cut plants.
Final Answer: (D)