The correct answer is a. maintaining a chronic positive energy balance
Explanation:
Our food contains calories which provide us energy. Each food type has a different amount of calories. Positive energy balance occurs when we take more calories than we burn.
If we take more calories than we burn for a long time than it will be accumulated in the body in the form of fat and will lead to weight gain and obesity. So maintaining a chronic positive energy balance can lead to obesity.
If we want to reduce the weight than calorie intake should be less than calorie expenditure.
