<prompt> Net reproductive rate of 1 can be achieved if Couple production rate is more than:30405060  <response>: Demographers are of the view that a net reproductive rate of 1 can be achieved if couple protection rate CPR is 60. CPR is based on observation that 50-60 of bihs in a year are of bih order 3 or more. Thus attaining a CPR of 60 or more will be equivalent to cutting off almost all third or higher order bihs leaving 2 or less children per couple or net reproductive rate around 1. Ref: Park 21st edition, page 456. Chapter: Demography and family planning. 