Respuesta :
The answer is C because doing a talk test or asking a coach don't measure someone's intensity levels. And the answer isn't D because a person might drink a lot of water at one time, but that doesn't mean that he/she is in an intense state. And so the answer is C because it correctly measures a person's intensity level because if a person is really intense, he or she would have a rapid heart rate.
Correct answer choice is:
C: Take his pulse.
Explanation:
Heart rate is an exceptional way to ascertain exercise intensity as it’s not subjective. Your heart sends blood throughout your body. The vigorously you exercise, the higher the need for oxygenated blood, and consequently the greater your heart rate will be. Because your heart reacts to exercise in a very anticipated way, you can use your heart rate to control exercise intensity. You can regulate your heart rate by using a heart rate adviser, observing your pulse at your wrist or neck, or utilizing the sensors fabricated into cardio exercise machine.