Final answer:
Non-skid shall be applied in a direction that opposes the potential movement or sliding.
Step-by-step explanation:
The direction in which non-skid shall be applied depends on the situation and the intended purpose of the non-skid material. Non-skid materials are often used to provide traction and prevent slipping. For example, on a ramp or staircase, non-skid material should be applied in a direction that opposes the potential movement or sliding of an individual's foot. This ensures that the foot grips the surface and doesn't slip.