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: Pediatrics
[{'content': 'WHO defines adolescent age between – \nSelect and explain. \nA. 10–19 years, B. 10–14 years, C. 10–25 years, D. 9–14 years', 'role': 'user'}, {'content': 'Answer: A \nExplanation: First see the difference between adolescence and puberty.\n\nAdolescence\n\nAdolescence is defined as the period from the onset of puberty to the termination of physical growth and attainment of final adult hight, i.e. adolescence is considered as a period of transition from childhood to adulthood. Adolescence is usually the period 10 to 20 yr.\n\nPuberty\n\nPuberty is the biological process in which a child become adult, i.e. biological process which occurs during transition from childhood to adulthood. Changes include appearance of secondary sex characteristics and development of reproductive capacity.', 'role': 'assistant'}]