The demographic transition model describes population change over time as a country becomes more developed. Age-structure diagrams describe how populations are distributed across age ranges. Which of the following age-structure diagrams best displays the age ranges in a country that is in stage 2 of the demographic transition?

a. A stationary age-structure diagram

b. An inverted pyramid age-structure diagram

c. A constrictive age-structure diagram

d. An expansive pyramid age-structure diagram

An expansive pyramid age structure diagram best displays the age ranges in a country that is in stage 2 of the demographic transition.

Option d

Explanation:

For a country in stage 2 of demographic transition, the expansive pyramid age structure diagram best suits the age-diagram to display the age ranges. This, is so because in an expansive pyramid age structure diagram, the presence of high birth rates with the slightly lower but still significant death rates, with a slightly longer life expectancy as compared to stage 1, the age-structure starts taking the shape of a pyramid that is expansive in nature, thus leading to such a diagram.