<prompt> Which of the following is the national system that provides annual national as well as state reliable estimates of feility and MoalityCivil registration systemCensusAd-hoc surveySample registration system  <response>: Sample registration system SRS : Was initiated in 1964-65 on a pilot basis ; Full scale from 1969-70 to provide national as well as state level reliable estimates of feility and Moality SRS is a dual record system Field investigation : Continuous enumeration of bihs and deaths by an enumerator Independent retrospective survey : Every 6 months by an investigator-supervisor Findings of SRS survey Crude bih rate CBR : 20.4 per 1000 mid year population Crude Death rate CDR : 6. 4 per 1000 mid year population Natural growth rate : 14 Infant Moality rate IMR : 34 per 1000 live bihs Ref: Park 23rd edition 904 