Which of the following statements is true about the use of harnesses?

Harnesses are critical safety equipment designed to prevent falls and protect individuals working at heights or in hazardous environments. For a harness to function effectively, it must fit the wearer correctly. A properly fitted harness ensures that the individual is securely restrained within the equipment, allowing it to distribute forces evenly across the body in case of a fall, thus minimizing the risk of injury.

If a harness does not fit correctly, it can lead to a range of problems, such as discomfort during movement, inability to secure the body effectively during a fall, and potential for slippage or accidental detachment. The importance of proper fit cannot be overstated, as it directly impacts the overall safety of the worker using it.

The other statements pertain to misusage or misconceptions about harnesses. Wearing harnesses solely at high elevations diminishes their role in safety across various environments. Additionally, they are not exclusive to construction workers; many professions require harness use whenever there's a risk of falling. Sharing harnesses can lead to improper fit, hygiene issues, and wear and tear that compromises safety, thus undermining the very purpose of the harness.