This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Demography and family planning, Subject name: Social & Preventive Medicine
The age and sex structure of a population may be best described by 
Select and explain. 
A. Life table, B. Correlation coefficient, C. Population pyramid, D. Bar cha
C: Population pyramid
Answer: C: Population pyramid 
Explanation: The age and sex composition of a country can be best described by population pyramid. Age group from 0-80+ is represented in a scale and the male and female population are represented on either side of the population pyramid. Reference: Park&;s textbook of preventive and social medicine, 23rd edition, pg no: 482,483