Which of the following is a characteristic of a qualified worker?

A characteristic of a qualified worker is that they understand electrical safety protocols. This understanding is essential as it enables them to identify hazards, implement safety measures, and work competently in environments that involve electrical systems. Qualified workers are trained and knowledgeable about the risks associated with their tasks, including the proper use of tools and equipment as well as life-saving techniques in case of emergencies.

This focus on understanding safety protocols ensures they adhere to regulations set forth by OSHA and other safety standards, thereby maintaining a safer work environment. Familiarity with these protocols helps to minimize the risks of accidents and injuries on the job, making this characteristic vital for any worker involved in hazardous occupations, particularly when dealing with electricity.

The other options do not depict the qualifications needed for safe and effective workplace performance.