This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Environment and health, Subject name: Social & Preventive Medicine
[{'content': 'Most common p[arameter used to detect endemic hypothyroidism - \nSelect and explain. \nA. Urinary iodine, B. Neonatal hypothyroidism, C. Rapid mass screening, D. Rate of consumption of iodine', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Neonatal hypothyroidism is a sensitive indicator of environmental iodine deficiency.This in turn indicates hypothyroidism. Parks textbook of preventive and social medicine.K Park. Edition 23.Pg no: 644', 'role': 'assistant'}]