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If the base of a population pyramid is narrow while the middle is broad, what may this indicate?

Answer and explanation

Correct answer: Fertility is low and the working-age group is large

A population pyramid shows how many people belong to each age group. Its base represents children and recent births, while its middle represents adolescents and working-age adults. A narrow base usually means that fewer children are being born, so fertility is relatively low or has been falling. A broad middle means that earlier, larger birth cohorts have reached working ages.

Option A is correct because it matches both features together: low fertility and a comparatively large working-age population. This pattern may occur during demographic transition, before the older population becomes dominant. Option B and C would generally produce a wide base, not a narrow one. Option D is clearly too extreme, because a pyramid with a broad middle contains many non-elderly people. The diagram alone cannot reveal every cause, but A is the strongest interpretation.

Related tags

Narrow Pyramid BaseWorking Age PopulationLow FertilityAge StructurePopulation CompositionGeographyClass 12 McqRdgdfgdfg

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