The least reliable way to assess physical exertion during exercise is to measure one's body composition. Thus, the correct option for this question is C.
<h3>What is meant by Physical exertion?</h3>
Physical exertion may be characterized as the kind of activity that significantly endeavor your muscles in various ways in order to keep fit and active.
Body composition is not a useful way to assess physical exertion during exercise. This is because it all depends on the creation, but the things like pulse rate, breathing ability, blood pressure, etc. remarkably depend on your physical activities and exercises.
Therefore, measuring one's body composition is one of the least reliable ways to assess physical exertion during exercise. Thus, the correct option for this question is C.
To learn more about Physical exercise, refer to the link:
brainly.com/question/13490156
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