<prompt> Which of the following isare source of mortality related data:Sample registration systemDeath certificateCentral births deaths registration actAll  <response>: Ans: D AlI SAMPLE REGISTRATION SYSTEM Park23rd84lThe SRS is a dual-record system, consisting of continuous enumeration of births deaths by an enumerator an independent survey every 6 months by an investigator- supervisorSince the introduction of this system, more reliable information on birth death rates, age-specific fertility mortality rates, infant, under-five adult mortality etc. have become availableThe central births deaths registration act,1969 Park 23rd841 The act came into force on 1 april 1970 The act provides for compulsory registration of births deaths throughout the country The time limit for registering the event of births that of deaths is 21 days uniformly allover India 