Final answer:
The Karvonen Method is used to determine exercise intensity that correlates to 60% to 80% of VO2 max. Option C.
Step-by-step explanation:
The method of determining exercise intensity that correlates directly to 60% to 80% of VO2 max is the Karvonen Method.
The Karvonen Method is a formula that takes into account an individual's resting heart rate (RHR) and calculates their target heart rate (THR) range for exercise. This method adjusts the exercise intensity based on an individual's fitness level, making it a more accurate measure of exercise intensity compared to other methods.
For example, the Karvonen Method takes into account an individual's RHR and their maximum heart rate (calculated as 220 minus their age) to determine their THR range. This allows for a personalized and effective exercise intensity range of 60% to 80% of VO2 max. Option C.