Which item is placed under a load to reduce friction during movement?

• A. Pallet Jack
• B. Cribbing
• C. Rollers
• D. Forklift

Answer: (C)

Rollers are used under a load to create rolling contact with the floor, turning sliding friction into rolling friction, which is much smaller. That reduction in friction makes it much easier to move heavy items without scraping the surface or applying excessive force. The other items serve different roles: a pallet jack is a tool for moving a load by lifting and rolling on its own wheels; cribbing provides support or height to stabilize or position a load; a forklift is a powered vehicle used to lift and transport loads. The key idea is that placing rollers under the load directly reduces the resistance to movement through rolling, not just lifting or stabilizing.