This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: obstetrics,pediatrics and geriatrics, Subject name: Social & Preventive Medicine
Mainly included in child survival index - 
Select and explain. 
A. MMR, B. IMR, C. Moality between 1 to 4 yr age, D. Under 5 moality
D: Under 5 moality
Answer: D: Under 5 moality 
Explanation: Park's textbook of preventive and social medicine 23rd edition. * The basic measure of infant and child survival is the under 5 moality.