Its going to be talk test
talk test does not require any physical work so it is not an effective way to gauge your body during exercise.
hope that helps!
Answer:
A) perspiration
Explanation:
Perspiration is not a particularly effective way of gauging the level at which your body is working during exercise. This is because perspiration depends on various different factors. For example, you might perspire a lot when the weather is really hot, even if you are not exercising. Therefore, perspiration should not be taken as the only measure of the level at which your body is working.
