Which of the following is categorized as a personal fall protection system?

A personal fall protection system is designed to protect individuals from falling while working at heights. Safety nets are specifically engineered to catch individuals who may fall from an elevated work surface, thus preventing injury. They are often used in construction sites and other environments where there is a risk of falling from significant heights. Safety nets are installed to act as a barrier, reducing the impact of a fall and providing a safety measure that is critical for those working in high-risk situations.

In contrast, conventional ladders are tools for accessing elevated areas but do not provide any protection against falls themselves. Heavy-duty boots provide comfort and protection for the feet but do not offer any fall protection. Reflective vests enhance visibility for safety on-site but do not prevent falls. Therefore, while all these items contribute to safety in various ways, safety nets are the only option listed that qualifies as a personal fall protection system.