<prompt> Most significant indicator of fertility is -Net reproductive rateFamily sizeGross reproduction rateGeneral fertility rate  <response>: Net reproduction rate Net reproductive rate is defined asThe no. of daughters a new born girl will bear during her lifetime assuming fixed age specific fertility and mortality ratesIt is the only fertility related statistics which also takes mortality rates into consideration.NRR of one is equivalent to attaining approximately the two child norms.Goal of NRR1 can be achieved only if at least 60 of the eligible couples are effectively practicing family planning.Gross reproduction rate GRR: Average number of girls that would be born to a married woman if she experiences the current fertility pattern throughout her reproductive span 15-44 or 49 year assuming no mortality. 