The basal metabolic rate measures the rate at which a person's body burns food and nutrient a. at rest b. under stress c. while exercising d. on average

Hello! B and D are not the answers, because they don’t have to do with basal metabolic rate. The basal metabolic rate measure the rate at which a person’s body burns food and nutrients while at rest. In this case, rest has something to do with it. The answer is A: at rest.

Ais the