One atmospheric pressure equals how many mm of mercury?

One atmospheric pressure equals how many mm of mercury?
A: 700 mm
B: 730 mm
C: 760 mm
D: 790 mm

One atmospheric pressure is defined as 760 millimeters of mercury at sea level standard for measuring air pressure. Other values listed deviate from this benchmark. This measurement is critical in meteorology for weather forecasting and aviation safety. Understanding atmospheric pressure aids in analyzing environmental conditions and their impact on human activities. The 760 mm standard reflects the force exerted by the atmosphere under typical conditions used widely in scientific calculations.