Final answer:
Option 1). The heart beat zones are related to energy usage.
Step-by-step explanation:
Energy consumption is connected to the heartbeat zones. Heart rate zones tell us how hard your heart is beating and whether fat or carbs are being used as fuel. Your body uses more glycogen from carbs as fuel when your heart rate increases. The heart rate rises with varying degrees of exercise in order to supply more oxygen and nutrients to the working muscles. With distinct heart rate zones correlating to varying degrees of energy expenditure, the heart rate zones can be used to help determine the exercise intensity. Energy utilization is the right response, hence choice 1 is the best one.