AP Psychology Practice Test 2026 - Free AP Psychology Practice Questions and Study Guide

Basal metabolic rate refers specifically to the amount of energy, measured in calories, that your body requires to maintain basic physiological functions while at rest. This includes processes such as breathing, circulation, cell production, and nutrient processing. It represents the minimum energy needed to keep your body functioning while not actively engaged in any physical activities. Understanding basal metabolic rate is essential for comprehending overall metabolism, energy balance, and weight management.

The other choices represent concepts that do not accurately define basal metabolic rate. For instance, a diet plan and a workout routine pertain to lifestyle choices made for weight management or health improvement, rather than resting energy needs. Additionally, the peak metabolic rate during exercise involves energy expenditure during vigorous activity, which is not representative of the resting state measured by the basal metabolic rate.