Final answer:
Enclosed or partially enclosed spaces may become hazardous to anyone entering, often have restricted access, and are not designed for continuous human occupancy but rather for work purposes, such as BSL-3 and BSL-4 labs that require special safety measures.
Step-by-step explanation:
An enclosed or partially enclosed space is defined as having certain characteristics. Selecting from the options provided, three definitions that fit are:
- B) May become hazardous to any person entering it: Such spaces may contain biological agents or other hazards that can cause serious health problems, or even be lethal, especially in the case of BSL-3 and BSL-4 laboratories.
- C) Has restricted means of access: These areas require strict access control, such as those outlined for BSL-3 and BSL-4 labs handling hazardous pathogens, to protect workers and the environment from contamination and exposure.
- D) Is not designed or intended for human occupancy other than for performing work: While these spaces can be entered for work purposes, they are not meant for continuous human occupancy and often require special safety.