Which description best defines a confined space?

• A. Limited means of entry or exit, large enough for a person to enter and perform work, not designed for continuous occupancy.
• B. A space that has no hazards and is always unoccupied.
• C. A space that is designed for continuous occupancy by multiple workers.
• D. A general workplace area with standard ventilation.

Answer: (A)

Confined spaces are defined by restricted means of entry or exit and are not intended for continuous occupancy, even though they are large enough for a person to enter and perform work. This limited access and non‑design for ongoing stay create special safety considerations, such as potential hazardous atmospheres or difficulties in rescue, which is why this description fits best. The other options describe spaces that either are hazard-free and unoccupied, designed for people to stay in long-term, or are simply general areas with standard ventilation; none of those capture the combination of restricted access and lack of intended continuous occupancy that defines a confined space.