Social & Preventive Medicine Nutrition and Health b4dc883a Calcium requirement in an infant (mg/day) - A 100 B 200 C 300 D 500 High-Yield Explanation Ans. is 'd' i.e., 500 Calcium requirementsAgeRDA - mg/dayAdult600Pregnant1200 (+600)Lactation1200 (+600)Infant500Children 1 - 9 years60010-16 years80016-18 years800