Question

4
select the correct answer.
during physical activity of high intensity, your heart will beat at a percentage of its maximum rate. which range shows the correct percentages during this type of activity?
○ a. 40%-50%
○ b. 50%-70%
○ c. 70%-85%
○ d. 85%-100%

Explanation:

During high - intensity physical activity, the heart rate is in the range of 85% - 100% of the maximum heart rate. Lower ranges (like 40% - 50% for light activity, 50% - 70% for moderate activity, 70% - 85% for somewhat vigorous activity) are for less intense physical efforts. High - intensity activity demands a higher percentage of the maximum heart rate to supply sufficient oxygen and energy to the working muscles.

Answer:

D. 85%–100%