Question

21. The health and the longevity of a country's people are reflected in its population age structure -- that is,
(A) the ratio of total population in different age groups.
(B) the percentages of total population in same age group.
(C) the percentages of total population in different age groups.
(D) the percentages of population in different age groups.​

Answer 1

Explanation:

the ratio of total population in different age groups

Answer 2

Explanation:

✳Answer✳

✳(A) the ratio of total population in different age groups.✳