This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General physiology, Subject name: Physiology
Decreased basal metabolic rate is seen in 
Select and explain. 
A. Obesity, B. Hypehyroidism, C. Feeding, D. Exercise
A: Obesity
Answer: A: Obesity 
Explanation: The remaining options utilise energy. Basal metabolic rate and obesity The basal metabolic rate accounts for about 60 to 75% of the daily calorie expenditure by individuals. It is influenced by several factors. BMR typically declines by 1-2% per decade after age 20, mostly due to loss of fat-free mass, although the variability between individuals is high. Ref guyton and hall textbook of medical physiology 12/e pg843