Which of the following is an important function of a fire helmet?

A fire helmet serves several critical safety functions, and one of the most important is to offer thermal protection. This is essential for firefighters who are frequently exposed to high temperatures and flames during their operations. The materials used in fire helmets are designed to withstand intense heat and protect the wearer from burns and injuries. Thermal protection is crucial not only for safeguarding the firefighter's head but also for ensuring their ability to continue functioning effectively in hazardous environments.

While some helmets may provide features that enhance visual performance, assist with flotation, or offer some level of electrical hazard protection, these functions are not the primary purpose of a fire helmet. The key goal of a fire helmet is to protect against extreme heat and thermal exposure, making it vital for safety in firefighting situations.