This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Growth, Development, and Behavior, Subject name: Pediatrics
[{'content': 'Anterior fontanelle closes by what age? \nSelect and explain. \nA. At term, B. 1 month, C. 18 months, D. 28 months', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., 18 months * Closure of anterior fontanel - 1[?]5 years (between 1 to 2 years).* Closure of posterior fontanel - 2-4 months.", 'role': 'assistant'}]