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If the child population is declining but the 25 to 44 age group is increasing, what is the most appropriate explanation?

Answer and explanation

Correct answer: Large birth cohorts from earlier years are now entering adult ages

Age groups are cohorts that move forward through the population structure as time passes. A large group born in earlier years may later appear in the 25–44 age range. At the same time, if recent births are fewer, the number of children can decline. These two changes can happen together and are not contradictory.

Therefore option A is the best explanation. Earlier large birth cohorts are now entering adulthood, while lower current fertility reduces the child population. The other choices incorrectly assume that all age groups must move in the same direction or that changes occur immediately. Migration can also affect age structure, but the stated pattern is most directly explained by the movement of earlier large cohorts into adult ages.

Related tags

Cohort EffectAdult PopulationChild DeclineAge StructurePopulation GrowthThe World Population – DistributionDensity And GrowthThe World Population Distribution Density And Growth

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