The population pyramid below shows the age-sex structure of Country A. Which of the following is best supported by the data shown?
ACountry A has a high birth rate, producing a large youth population that will require expanding schools and child health services
BCountry A has a shrinking population, with each younger age group smaller than the one born before it, typical of sustained fertility decline
CCountry A has a large elderly population relative to its working-age population, straining its pension system and healthcare funding
DCountry A has an equal number of people in every age group from birth through age 65 and older, implying decades of unchanged fertility
Explanation
The pyramid has a wide base that narrows steadily with age — each younger cohort is larger than the one before it, the classic signature of a high birth rate and a young, fast-growing population, which creates rising demand for schools and child health services rather than the aging-population pressures the other choices describe.
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