Normal adult systolic blood pressure is generally:

• A. 100-120 mm Hg systolic
• B. 90-120 mm Hg systolic
• C. 60-85 mm Hg systolic
• D. 120-140 mm Hg systolic

Answer: (B)

Systolic blood pressure is the peak pressure in the arteries when the heart contracts. For an average healthy adult at rest, this value typically ranges from about 90 to 120 mm Hg. This window is used because it covers normal variation among individuals while distinguishing readings that are too low (hypotension) from those that are too high (elevated or hypertensive). Values below roughly 90 mm Hg can indicate low blood pressure, while readings around 120 mm Hg or higher begin to move into elevated or hypertensive territory, depending on the exact number and guideline context. Therefore, the range 90-120 mm Hg best represents normal systolic pressure in adults.