What intensity of deep-water exercise typically has a higher caloric expenditure?

The choice indicating that high intensity of deep-water exercise typically results in a higher caloric expenditure is correct because the body utilizes more energy during vigorous physical activities. High-intensity exercise involves engaging multiple muscle groups at a rapid pace, significantly elevating the heart rate and metabolic rate. This increased demand for energy not only burns calories during the activity itself but can also lead to a prolonged caloric burn even after the exercise session has ended due to the increased post-exercise oxygen consumption.

In contrast, lower intensity and moderate intensity exercises do not challenge the body as much. While they may still contribute to caloric expenditure, the overall rate is significantly less than that of high-intensity workouts. An inactive state, on the other hand, minimizes energy expenditure, as the body's caloric needs drastically drop when at rest. Therefore, the clearer relationship between high-intensity activity and caloric burn highlights why this intensity level is categorized as having the highest caloric expenditure.