Best representation of a population with age variation

Ans. is 'c' i.e., Population pyramid The age and sex distribution of a population is best represented by population pyramidIn countries with high bih rates as ours, it is broad based conical pyramid because of high bih rate and tapering of population with increase in age.In developed countries with low bih rate, the pyramid swells in the middle and is narrow at the base and is not so conical at the top. (dumb bell shaped).