Which statement best describes the function of brown fat?

Brown fat's primary function is to generate heat through a process called non-shivering thermogenesis. This specialized type of fat contains a high number of mitochondria, which are the powerhouse of cells and produce heat by burning fatty acids and glucose. Unlike white fat, which primarily stores energy, brown fat is actively involved in thermoregulation, especially in response to cold exposure. It helps maintain body temperature by converting energy into heat rather than storing it. In contrast, other options like energy storage, aiding digestion, or muscle recovery do not accurately capture the unique and critical role of brown fat in metabolism. Thus, option B accurately describes the specific function brown fat serves in the body.