Which term is a structure that divides or separates?

• A. Ambulatory care facility
• B. Airborne
• C. Anteroom
• D. Barrier

Answer: (D)

A barrier is a physical or operational boundary that divides spaces to prevent spread of contaminants. It can be a wall, door, curtain, plastic sheeting, or any structure that creates a separated area and controls access between zones. This makes it the best fit for “a structure that divides or separates.” An ambulatory care facility describes a type of healthcare setting, not a dividing structure. Airborne refers to a transmission route, not a physical separator. An anteroom is a specific room used as a transitional space between areas, which can aid separation but is not the general term for a dividing structure.