Air, like other gases, flows from a region with ________.

A. Lower pressure to a region with higher pressure
B. No pressure to a region with high pressure
C. Little pressure to a region with high pressure
D. Higher pressure to a region with lower pressure

Air, like other gases, flows from a region with higher pressure to a region with lower pressure. This is known as the principle of pressure differential. When there is a difference in pressure between two regions, the gas will naturally move from the area of higher pressure to the area of lower pressure in an attempt to equalize the pressure. The greater the pressure difference, the stronger the flow of air will be. Therefore, the answer to the question is D. Higher pressure to a region with lower pressure.