Which statement correctly identifies the two primary units for atmospheric pressure at sea level in this context?

• A. 14.69 psi and 29.92 inHg
• B. 14.40 psi and 29.50 inHg
• C. 15.00 psi and 29.92 inHg
• D. 14.50 psi and 30.00 inHg

Answer: (A)

Standard sea-level atmospheric pressure is defined as 1 atmosphere, which is about 1013.25 hPa. That pressure corresponds to roughly 14.69 psi and 29.92 inHg. In this context, those two numbers represent the same pressure in two common units, so this pairing is the correct reference for sea-level pressure. The other options give values that don’t match the established standard (either different numbers or a mismatched pair that wouldn’t convert to the same pressure). In aviation practice, you’ll see pressure stated in either psi or inches of mercury, but the standard reference remains about 14.69 psi and 29.92 inHg.