If you take in more calories without added activity, what will happen?

When you consume more calories than your body needs for energy expenditure, the excess calories are typically stored as fat, leading to an increase in body weight. This process occurs because the body has a limited capacity to utilize immediate energy from food; any surplus beyond what is required for daily activities and metabolic functions is converted and stored. If physical activity does not increase to match the higher caloric intake, it will result in a positive energy balance, which is directly associated with weight gain over time. Thus, option C accurately reflects the consequence of taking in more calories without corresponding increases in activity.