What is the normal range for adult blood pressure?

The normal range for adult blood pressure is generally considered to be between 90/60 mmHg and 120/80 mmHg. This range indicates that the systolic pressure (the first number) should ideally be less than 120 mmHg, while the diastolic pressure (the second number) should be less than 80 mmHg to fall within the normal parameters for a healthy adult.

Blood pressure readings above this range may indicate hypertension, and readings significantly below it can suggest hypotension, both of which may require medical attention or monitoring.

In the other answer options, the ranges provided do not reflect the widely accepted norms for adult blood pressure. For example, the first option suggests a range that is too low for most adults, while the third and fourth options include numbers that fall outside the normal physiological range, which could lead to misassessment of a patient's health status. Thus, the second option accurately describes the expected healthy blood pressure levels for adults.