Final answer:
The most effective method of fall protection is removing the need to do work at height because it eliminates the risk of falls altogether. If unavoidable, using guardrails, safety harnesses, and safety nets are measures to mitigate risks. Ensuring safety when working at heights includes taking appropriate precautions to prevent dropping objects in hazardous areas.
Step-by-step explanation:
The best method of fall protection is C) Removing the need to do work at height. This approach is the most effective in preventing falls because it eliminates the risk entirely. When it is not feasible to eliminate work at height, other protective measures should be taken. Using guardrails is a passive form of fall protection that can prevent workers from falling. Wearing a safety harness is part of a personal fall arrest system, which should be used when workers are exposed to fall hazards and guardrails are not feasible. Lastly, using safety nets can provide a level of collective protection to catch individuals if they fall. It is important to understand that while these other methods can help mitigate the risk of falls, they are not as effective as eliminating the need to work at a height in the first place.
When work at height cannot be avoided, taking precautions is vital. These include ensuring a safe distance from the edge, not leaning too far over railings, and being cautious not to drop objects into areas with pedestrian or vehicular traffic, as well as ensuring the dropped objects will not cause damage to people or property.