What is the average resting heart rate for adults?

The average resting heart rate for adults typically falls within the range of 60 to 100 beats per minute. This range is established based on numerous studies and clinical observations. Generally, a heart rate below 60 beats per minute can be an indication of bradycardia, which may be normal for highly trained athletes but not for the general population. Conversely, a resting heart rate above 100 beats per minute, known as tachycardia, can be symptomatic of underlying health issues or excessive physical exertion. The normal range of 60-100 bpm is considered a healthy standard for an adult at rest, as it reflects sufficient cardiac function and circulatory efficiency.

The other ranges presented in the choices do not accurately represent average heart rates for the adult population. For instance, 40-60 beats per minute may be seen in trained athletes but is not suitable for the average adult. Similarly, a resting heart rate of 100-120 or 80-120 beats per minute is indicative of potential health issues and is outside the normal range. Thus, the correct range that defines the average resting heart rate for adults is indeed 60-100 beats per minute.