What is the typical atmospheric pressure at sea level in kilopascals?

• A. 90 kPa
• B. 100 kPa
• C. 110 kPa
• D. 101 kPa

Answer: (B)

Atmospheric pressure at sea level is usually described as about one atmosphere, which is roughly 101.3 kilopascals. For ease of calculation in many training contexts, this value is often rounded to a neat figure, commonly 100 kPa. Among the options, 100 kPa fits that practical rounding best, making it the best match for a typical sea-level pressure in kilopascals. The exact standard value is closer to 101 kPa, but the rounded convention used here favors 100 kPa. The other numbers are noticeably far from the common sea-level range.