Which of these is a potential hazard that necessitates eye protection?

Airborne dust is indeed a significant potential hazard that necessitates eye protection because it can lead to various eye injuries and conditions, such as irritation, abrasion, or infection. When working in environments where dust and particulates are present, such as during construction, demolition, or woodworking, the risk of these materials entering the eye increases significantly. This exposure can impair vision or cause serious long-term damage, making protective eyewear essential for safety.

The other hazards listed, such as excessive noise and temperature fluctuations, while also important safety concerns, do not directly necessitate eye protection. Excessive noise primarily requires hearing protection, and temperature fluctuations may require thermal protective gear but not specifically eye protection. Understanding the specific nature of hazards in a work environment is key to properly selecting and utilizing personal protective equipment.