Final answer:
To make sure the path is clear when your view is obstructed while handling materials, you should use a spotter. A spotter is a person who helps by watching for any potential hazards or obstacles.
Step-by-step explanation:
When handling materials and your view is obstructed, it is important to use a spotter to help make sure the path is clear. A spotter is a person who assists by watching for any potential hazards or obstacles that may not be visible to the person handling the materials. They can give instructions or warnings to ensure safety.