Aresearcher is trying to design an experiment to measure the amount of energy a person uses during different activities. he proposes to measure heart rate as an indirect measure of metabolic rate. which of the following would give him a more precise measure of energy use? comparing the amount of sugar released in the urine before and after the activity measuring the amount of carbon dioxide released from the lungs during the activity monitoring the number of calories voluntarily consumed following the activity tracking the increase in sweat production over the course of the activity

Monitoring the number of calories voluntarily consumed following the activity

Explanation:

A calorie is the amount of heat needed to raise the temperature of one gram of water by one degree Celsius. Calories in present in food serve the purpose of providing energy in the form of heat so that our bodies can function. Our bodies store and "burn" calories as fuel.

During physical activity, more calories are burnt than during voluntary activities. Hence measuring the calories voluntarily consumed is a measure of the energy used during the activity.

so whats the answer

i believe it would be c: tons.