Isaac Has Been Physically Inactive and Obese for as Long

Multiple Choice

Isaac has been physically inactive and obese for as long as he can remember.He is now determined to lose excess weight with a reduced-calorie diet.Isaac is likely to have difficulty losing weight while dieting because

A) low-calorie diets trigger increased secretions of leptin.
B) his resting metabolic rate will increase and cause him to overeat.
C) he has an unusually low set point for body weight.
D) it takes fewer calories to maintain fat than muscle.