Which safety gear is mandatory when operating hoisting equipment?

The correct choice highlights the full range of personal protective equipment that is essential for ensuring the safety of operators and workers in the vicinity when using hoisting equipment. A hard hat protects against falling objects, while safety glasses shield the eyes from debris and potential hazards. Gloves are critical for maintaining grip and protecting the hands from abrasions and potential cuts, and steel-toed boots safeguard the feet from heavy equipment and provide support during movement on uneven surfaces.

While other options might include some components of safety gear, they do not cover the comprehensive protection required in hoisting operations. For instance, reflective vests and earplugs address specific safety concerns, such as visibility and noise, but neglect the broader physical risks from heavy machinery. Similarly, focusing solely on safety glasses and gloves lacks essential head and foot protection. The inclusion of harnesses is important for fall protection in certain contexts, but without head protection and proper footwear, operators would remain vulnerable. Therefore, the full set of gear in the correct choice ensures maximum safety for all individuals involved in hoisting operations.