What is the normal adult blood pressure range?

• A. Systolic 90-119 and diastolic 60-79.
• B. Systolic 100-139 and diastolic 60-89.
• C. Systolic less than 120 and diastolic less than 80; report anything outside normal limits.
• D. Systolic 140 or higher.

Answer: (C)

Normal adult blood pressure is when the systolic pressure is under 120 mmHg and the diastolic pressure is under 80 mmHg. This threshold gives a clear rule for what counts as normal and tells you when to report readings that exceed it. If either number is 120/80 or higher, it’s outside normal limits and should be communicated to the nurse for follow-up. The statement that describes measurements as below 120/80 and instructs to report anything outside those limits fits this practical approach, which is why it’s the best choice.