This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Demography, Subject name: Social & Preventive Medicine
In calculating Dependency Ratio, the numerator is expressed as: 
Select and explain. 
A. Population under 10 years and 60 and above., B. Population under 15 years and 60 and above., C. Population under 10 years and 65 and above, D. Population under 15 years and 65 and above
D: Population under 15 years and 65 and above
Answer: D: Population under 15 years and 65 and above 
Explanation: Ans. is 'd' i.e. population under 15 years and 65 and above The ratio of combined age group 0-14 years plus 65 years and above to the 15-65 years age group is known as total dependency ratio.Total dependency ratio =Age group 0-14 yrs & age group above 65 yrs Age group between 15-65 yrsIt is also referred to as the societal dependency ratio and reflects the need for a society to provide for their younger and older population groups. The proportion of persons above 65 years of age and children below 15 years of age are considered to be dependent on the economically productive age group (15-64 years)