What safety gear must be worn by operators?

The requirement for operators to wear hard hats, high-visibility vests, gloves, and safety boots is crucial for ensuring safety on the site. Each piece of safety gear plays a specific role in protecting the operator.

A hard hat protects against falling objects and head injuries, which are significant risks in construction and heavy machinery operation environments. High-visibility vests enhance the operator's visibility to other workers and vehicles, reducing the risk of accidents. Gloves provide hand protection against sharp edges, heavy loads, and potential hazards, while safety boots, typically reinforced, protect the feet from heavy falling objects and potential punctures from sharp materials on the ground.

The other options do not encompass the full range of safety needs for operators in potentially hazardous work environments. Failing to use complete safety gear could increase the risk of injury, making the comprehensive set of gear outlined in the correct choice indispensable for safe operation.