Question

calories burned during physical activity do not depend on which of the following variables?
your age
your weight
duration of physical activity
type of physical activity

Explanation:

Calories burned during physical activity is primarily determined by factors that affect energy expenditure: heavier people burn more calories moving their mass, longer activity uses more energy, and different activity types have varying intensity (e.g., running vs. walking burns more per minute). While age can influence metabolism slightly, it is not a direct, independent variable that calorie burn depends on compared to the other options; the core calculation of activity calorie burn relies on weight, duration, and activity intensity/type.

Answer:

A. Your age