Ensuring higher air pressure inside of a building, compared to outside the building, is known as __________.

A.
Positive pressurization

B.
High pressure air flow

C.
HVAC

D.
Internal pressurization

Explanation:
Buildings should have HVACs that provide positive air pressure, which
means that air goes out of a door when it is open. This helps to reduce the
possibility of external contaminates entering the facility and allows smoke to exit
a building in cases of fires.