Answer:
The correct answer is option c. 60 seconds.
Step-by-step explanation:
We call the heart rate to the number of times our heart beats in a minute.
Not all people have the same cardiac frequency, and it is not even the same in a person if they are lying down or doing some physical activity.
To determine our pulse we must count our beats for 10 seconds and multiply it by 6. This will result in a number we call heart rate.
While the body is at rest, the normal heart rate is in children 70-100 beats per minute and in adults 60-100 per minute.