You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is To achieve a NRR of 1, Couple protection rate should be: March 2005 and explain in detail?
Ans. D: More than 60% Couple protection rate is an indicator of the prevalence of contraceptive practice in the community. It is defined as the percent of eligible couples effectively protected against childbih by one or the other approved methods of family planning. CPR is based on the observation that 50-60% of bihs in a year are of bih order 3 or more. Thus attaining a 60% CPR will be equivalent to cutting off almost all third or higher order bihs, leaving 2 or less surviving children per couple So demographic goal of NRR=1 can only be achieved only if the CPR exceeds 60%.