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If country A has a higher life expectancy than country B, but A has higher crude death rate, it is likely that

  • A.A's population is younger than that of B.
  • B.A's population is older than that of B.
  • C.A's population has a high infant mortality rate.
  • D.None of the above is probable.

Answer: B

If country A has a higher life expectancy but also a higher crude death rate than country B, A's population is probably older.

The crude death rate is the number of deaths per thousand of the whole population, so it depends on the age structure. A country with many old people has many deaths each year even when each person lives longer on average. A high life expectancy with a high crude death rate therefore points to an ageing population.

A younger population would give a lower death rate, not a higher one. A high infant mortality would lower life expectancy, which contradicts the data. So the answer is the one that says A is older.

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