Which of the correct definition for basal metabolic rate or BMR?

Basal Metabolic Rate (BMR) is the amount of energy expended while at rest in a neutrally temperate environment, in the post-absorptive state (meaning the digestive system is inactive). It represents the minimum caloric requirements needed to maintain basic physiological functions, such as breathing, circulation, and cell production. BMR is influenced by factors such as age, sex, weight, and body composition.