Question

youre going to be performing a task at work that requires a clean air supply. what type of respirator should you use?
supplied air respirator
air - purifying respirator
oxygen tank
a snorkel
if you need to review this content, it can be found in the respiratory protection module of the personal protective equipment topic.

Explanation:

A Supplied - Air Respirator provides clean air from an external source, which is suitable when a clean air supply is required. An Air - Purifying Respirator cleans the air around the user, which may not be sufficient for a task that requires a guaranteed clean air supply. An Oxygen Tank is mainly for providing oxygen in low - oxygen environments or for medical purposes. A Snorkel is used for breathing in water and is not relevant for work tasks requiring clean air supply.

Answer:

Supplied Air Respirator