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': 'Moality statistics are taken into account while calculating \nSelect and explain. \nA. GER, B. NRR, C. TFR, D. GMFR', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Net reproduction rate is defined as the number of daughters a newborn girl will bear during her life time assuming fixed age specific feility and moality rates NRR is a demographic indicator NRR of 1 is equivalent to attaining approximately the 2 child norm Reference : Park&;s textbook of preventive and social medicine, 23rd edition, Page no: 489', 'role': 'assistant'}]