What is the normal heart rate range for adults?

• A. 60-100
• B. 50-90
• C. 70-110
• D. 65-105

Answer: (A)

The main concept is the normal resting heart rate for adults. For healthy adults at rest, a typical heart rate falls between about 60 and 100 beats per minute. This range comes from standard clinical references and population data, reflecting normal autonomic regulation of the heart.

That’s why the range 60-100 is the best choice: it aligns with what is generally considered normal in everyday clinical practice and textbooks. Other ranges either set an upper bound that's too low or a lower bound that's too high, which would exclude many healthy individuals who sit comfortably within the 60–100 bpm window. Keep in mind that some people, such as well-trained athletes, may have resting heart rates below 60 and still be perfectly healthy, but the broad, widely used reference remains 60–100 bpm.