This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Demography and family planning, Subject name: Social & Preventive Medicine
[{'content': 'Total feility rate \nSelect and explain. \nA. Total no. Of children born to a woman in a given year, B. Measure of completed family size, C. Sum of feility of all age, D. No. of female children born to mother', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Total feility rate represents the average number of children a woman would have if she were to pass through her reproductive years bearing children at the same rates as the women now in each age group It gives the appropriate magnitude of completed family size Reference : Park&;s textbook of preventive and social medicine, 23rd edition, Pag no: 489', 'role': 'assistant'}]