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': 'What is net production rate? \nSelect and explain. \nA. Number of children a newborn girl has in her life time, B. Number of female children a newborn girl has in her life time, C. Number of male children a newborn girl has in her life time, D. Number of female children a newborn girl has in her life time taking into account the moality', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Net Reproduction Rate (NRR) Net Reproduction Rate (NRR) is defined as the number of daughters a newborn girl will bear during her lifetime 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. If the NRR is less than 1, then the reproductive performance of the population is said to be below replacement level. Ref: Park 25th edition Pgno : 540', 'role': 'assistant'}]