<prompt> To achieve Net Reproduction Rate of 1, the couple protection rate should be50556065  <response>: Ans. c 60 Ref. Park PSM 22nd pg. 454 Net reproduction rate NRR1 can be achieved only if the CPR exceeds 60.ELIGIBLE COUPLES EC Refers to a currently married couple wherein the wife is in the reproductive age 1545 years. At least 150-180 such couples per 1000 population in India. 20 of EC are found in the age group 15-24 yrs. There are about 169 million couples in country 31399. Average 2.5 million EC are joining the reproductive group every year.COUPLE PROTECTION RATE CPR It is an indicator of the prevalence of contraceptive practice in the community. It is defined as the percent of eligible couples effectively protected against childbirth by one or the other approved methods of family planning. Sterilization accounts for over 60 CPR. During 2002-2003, total number of family planning acceptors by all the methods below was there but about 54 eligible couples are still unprotected:1. Sterilization -4.73 million2. IUD insertion -6.11 million3. NirodhCondom users -16.54 million4. Oral pill users -8.24 million 