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What is the most likely present age-structural effect of a baby boom that occurred 25 years ago?

Answer and explanation

Correct answer: An unusually large cohort in the mid-twenties

A baby boom is a period when the number of births is unusually high. The babies born during that period form a larger-than-usual birth cohort. As this cohort grows older, the large group moves through the age structure together. Twenty-five years later, most surviving members of that cohort will be approximately 25 years old, allowing for differences in birthdays, mortality, and migration.

Therefore, option A is correct: the population pyramid is likely to show an unusually large cohort in the mid-twenties. It will not remain only among newborns, because the cohort ages over time. It is not yet an elderly bulge, since the group is around young-adult age. Option D is also wrong because a large birth cohort can continue to influence several age groups as it advances through the population structure.

Related tags

Baby BoomBirth CohortAge PyramidAge StructurePopulation CompositionGeographyClass 12 Mcq

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