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If the base of a population pyramid is broad but the 10 to 19 age section is even broader, which conclusion may be appropriate?

Answer and explanation

Correct answer: Births were higher earlier and recent fertility has declined somewhat

The governing idea is cohort comparison in a population pyramid. The 10–19 group was born roughly one to two decades earlier than the youngest children. If that adolescent band is wider than the base, those earlier birth cohorts were larger than the more recent cohorts. The base can still be broad, showing that the child population remains substantial, but its relative narrowing suggests that fertility has declined somewhat in recent years. Therefore option B is the most appropriate conclusion. Option A would be more plausible if the youngest cohorts were wider than the adolescent group. Option C is unrelated to the stated age bands, and option D is too absolute because migration alone cannot be inferred from this shape.

Related tags

Population PyramidCohort AnalysisFertility DeclineAge StructurePopulation CompositionGeographyClass 12 Mcq

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