What is a typical range for systolic blood pressure in a healthy 30-year-old adult?

• A. 70 and 140 mm Hg.
• B. 90 and 140 mm Hg.
• C. 60 and 120 mm Hg.
• D. 80 and 120 mm Hg.

Answer: (B)

Normal systolic blood pressure reflects the pressure in the arteries during the heart’s contraction. For a healthy 30-year-old at rest, a typical range is about 90 to 140 mm Hg. The lower end around 90 ensures organs receive enough blood flow, while values up to roughly 140 are still considered within a normal range before hypertension is diagnosed. Values well below 90 suggest hypotension, and values at or above about 140 begin to cross into hypertension territory. Among the options, 90–140 mm Hg best captures this practical resting range for a young adult. The other ranges include numbers that are too low to be typical or fail to accommodate the upper end that many healthy individuals can have.