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If a country's age pyramid has a moderately broad base, a very broad middle, and an upper section that is gradually widening, which conclusion is most logical?

Answer and explanation

Correct answer: The country is in an advanced demographic transition and moving toward ageing

An age pyramid shows how people are distributed among children, working-age adults, and older people. A moderately broad base means births are not extremely high, while a very broad middle means that a large share of the population is in working ages. A gradually widening upper part suggests that people are living longer and the older population is increasing.

Therefore, the pattern fits an advanced stage of demographic transition, in which fertility has fallen and ageing is beginning. Option B is correct. Option A would require a very broad base and a strongly youthful structure. Options C and D are unreasonable because the pyramid clearly shows a substantial working-age group, and migration alone cannot be concluded from its shape.

Related tags

Age PyramidDemographic TransitionPopulation AgeingWorking Age PopulationAge StructurePopulation CompositionGeographyClass 12 Mcq

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