Question

what is required before using a respirator? select the best option. nothing proper training on respirators survey of the work area users guide

Explanation:

Using a respirator requires proper training to ensure it is used correctly for safety and effectiveness. A survey of the work area is related to overall hazard - assessment but not a direct pre - requisite for using the respirator. Just having a user's guide may not be sufficient without training. Doing nothing before using a respirator is dangerous.

Answer:

Proper training on respirators