A 25-year-old client exercising at a moderate intensity level should have a target heart rate of:

To determine the appropriate target heart rate for a 25-year-old client exercising at a moderate intensity level, we first need to understand how target heart rates are calculated based on age and intensity. The common method involves calculating the maximum heart rate, which can be estimated using the formula: 220 minus the person's age. For a 25-year-old, the maximum heart rate would be approximately 195 beats per minute (BPM).

Moderate intensity exercise is generally defined as being 50-70% of the maximum heart rate. Calculating 50% of the maximum heart rate gives us 97.5 BPM, and 70% brings us to about 136.5 BPM. Therefore, the range for moderate intensity for this client would be approximately 98 to 137 BPM.

The target heart rate range of 107-136 BPM falls well within this moderate intensity exercise zone. It is tailored to provide cardiovascular benefits while ensuring the exercise remains comfortably challenging, promoting safe and effective workouts.

In contrast, the other provided heart rate ranges fall outside the moderate intensity category, as they either reflect lower levels of exertion or suggest higher levels of intensity not suitable for a moderate exercise routine. Hence, the range of 107-136 BPM is the