What is the normal blood pressure range for adults?

The normal blood pressure range for adults is typically defined as 110/70 to 120/80 mmHg. While option A encompasses a broader range, including 100/60 to 140/80 mmHg, it is the best fit since it includes the central normal range of 120/80 mmHg as well as values that can still be considered acceptable for some adults, especially those who might be slightly outside the ideal range due to individual variations in health conditions.

It's important to note that the other options either include lower blood pressure values that are generally considered too low, or they exceed the guidelines for healthy blood pressure levels. For example, options that start below 100/60 mmHg can represent hypotension, which may require evaluation if symptomatic, while values above 140/80 mmHg might indicate prehypertension or hypertension depending on other health considerations. Understanding the nuances of blood pressure ranges helps ensure better health monitoring and management.