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If a country has a large elderly population, what effect may occur on the average age?

Answer and explanation

Correct answer: Average age may rise

Average age is a summary measure of the ages of all people in a population. If elderly people form a large share, more individuals have ages well above the middle of the age range, and this can pull the average upward. The effect is strongest when the elderly share rises relative to children and younger adults. Average age is therefore connected to the entire age structure, not to one person’s age.

Option A is correct because a large elderly population may raise the population’s average age. It is a possible effect, not an unavoidable result in every situation: migration, fertility, and the sizes of other age groups also matter. A very large child population could instead lower the average. Options B and C are plainly inconsistent with the meaning of average age, while D wrongly denies the connection between age composition and the average. Hence A is the best choice.

Related tags

Average AgeElderly PopulationAge StructurePopulation AgeingPopulation CompositionGeographyClass 12 McqRdgdfgdfg

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