Which of the following types of protective equipment must be used when there is exposure to hazardous noise levels?

Hearing protection is essential when there is exposure to hazardous noise levels because it helps to prevent hearing loss and protect the auditory system from damage caused by excessive sound. Prolonged exposure to high noise levels can lead to permanent hearing impairment or other auditory issues, making it imperative for workers in noisy environments to utilize appropriate hearing protection devices, such as earplugs or earmuffs.

While body armor serves a specific purpose related to protecting against physical impacts and face shields are used to guard the face from potential hazards, neither is effective in safeguarding against noise-induced damage. It's crucial for workers to recognize the importance of hearing protection in maintaining their long-term health, especially in industries where noise levels often exceed recommended safety thresholds.