This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Physiology
[{'content': 'Main mechanism in thermoregulation-heat loss is \nSelect and explain. \nA. Radiation, B. Evaporation, C. Conduction, D. Convection', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Heat is lost from the body mainly by radiation (60%), evaporation (22%) and Conduction (18%).', 'role': 'assistant'}]