Which of the following is a requirement for a shop's work area?

A requirement for a shop's work area is that a protective cage must be present for testing, particularly in environments where hazardous materials or equipment are involved. This safety measure is essential to protect both the workers and the surrounding area from potential accidents or malfunctions that could result during testing procedures. A protective cage serves as a containment and safety barrier, ensuring that any inadvertent releases or hazardous events are contained and do not pose a risk to personnel or equipment.

Having this equipment in place is critical for maintaining safety standards in a work area. It emphasizes the importance of implementing specific safety measures tailored to the unique risks associated with the activities conducted in the shop. Other aspects, such as ensuring clear labeling or providing adequate exits, contribute to workplace safety as well, but the presence of a protective cage specifically addresses the concerns related to operational testing environments.