The physiologic concept of adaptive thermogenesis best explains which of the following observations in weight management?

• A. Adults who reduce calorie intake markedly may stop losing weight even though they continue the same diet.
• B. Children with a family history of obesity are more likely to become obese.
• C. People tolerate extreme cold by burning more calories through shivering.
• D. The basal metabolic rate declines steadily as a person ages.