Social & Preventive Medicine Statistical Tests 5daf01a6 Registration of birth should be done: A Within 15 days B After 21 days C Before 21 days D Within 30 days High-Yield Explanation Ans. (c) Before 21 daysRef : K. Park 23rd ed. / 840-41Registration of Some Vital Events* Birth: before 21 days* Death: before 21 days* Marriage: before 30 days