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Under which condition can strong net in-migration temporarily slow population ageing?

Answer and explanation

Correct answer: When most migrants are young working-age adults

Population ageing is measured partly by the share of older people in the total population. If most incoming migrants are young working-age adults, they increase the size of the working-age group. This can reduce the percentage share of elderly people for a while, even if the absolute number of elderly residents does not fall. Young migrants may also have children, affecting the age structure further.

Option A is correct. The question asks when net in-migration can temporarily slow ageing, and the age of migrants is decisive. If migrants are elderly, they may increase rather than reduce the older share. No migration creates no such effect, while migrants who immediately leave do not add lasting population. The word “temporarily” matters because migrants themselves will age over time.

Related tags

Migration And AgeingYoung MigrantsWorking Age PopulationAge StructurePopulation GrowthThe World Population – DistributionDensity And GrowthThe World Population Distribution Density And Growth

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