Final answer:
According to the energy balance equation, body weight would increase if the rate of energy intake exceeds the rate of energy expenditure.
Step-by-step explanation:
The correct answer is d. All of these answers are correct. According to the energy balance equation, body weight would increase if the rate of energy intake exceeds the rate of energy expenditure. This means that if you consume more calories than you burn through physical activity and metabolic processes, you will gain weight. For example, if you consistently eat more food without increasing your physical activity, the excess calories will be stored as fat, resulting in weight gain.