What is a normal adult blood pressure range?

• A. Systolic 80 to 100 mmHg and diastolic 50 to 60 mmHg.
• B. Systolic 90 to 120 mmHg and diastolic 60 to 80 mmHg.
• C. Systolic 130 to 150 mmHg and diastolic 80 to 90 mmHg.
• D. Systolic 150 to 170 mmHg and diastolic 90 to 100 mmHg.

Answer: (B)

Normal adult blood pressure sits around 90–120 systolic and 60–80 diastolic. This range reflects the typical values considered by clinicians as healthy for most adults. The option that matches this, with systolic 90–120 and diastolic 60–80, is the best choice because it aligns with standard definitions of normal blood pressure.

Ranges that are lower, like 80–100 systolic / 50–60 diastolic, are generally below normal and can indicate hypotension. Values in the 130–150 systolic or 80–90 diastolic range and above—such as 150–170 / 90–100—are higher than normal and fall into elevated or hypertensive categories. Remember, a single reading can vary, but the 90–120 / 60–80 range best represents normal adult blood pressure.