The talk test can be used to measure the
a.
knowledge of an activity
b.
intensity of an activity
c.
length of an activity
d.
cost of an activity

The answer is b. Intensity of an activity

Talk test basically determine how intense your activity is by gauging how much you can talk during that activity

For example,you can still talk while you're jogging, meanwhile you can't talk at all when you're sprinting. This means that sprinting is a far more intense activity than jogging

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