Which statement is true regarding structural fire helmets?

Structural fire helmets are a crucial part of a firefighter's personal protective equipment (PPE) designed to provide protection from heat, impact, and other hazards encountered during firefighting operations.

The statement regarding the necessity of earflaps is accurate because earflaps are an important feature of structural fire helmets. They serve multiple purposes, including providing additional thermal protection and shielding the ears from exposure to extreme heat and debris that may occur during a fire. This is particularly important in protecting firefighters from potential injuries or long-term damage associated with extreme conditions.

While reflectivity, lightweight design, and optional equipment properties are considerations in helmet design and use, earflaps are specifically mandated as part of many standards for firefighting helmets, aligning with safety protocols and ensuring comprehensive protection for the wearer.