The triangular shaped age-sex pyramid with a broad base is a typical example of which one of the following countries?

Nigeria

The correct answer is Option (4) → Nigeria

The age-sex structure of a population refers to the number of females and males in different age groups. A population pyramid is used to show the age-sex structure of the population. The shape of the population pyramid reflects the characteristics of the population. The left side shows the percentage of males while the right side shows the percentage of women in each age group. The age-sex pyramid of Nigeria is a triangular shaped pyramid with a wide base and is typical of less developed countries. These have larger populations in lower age groups due to high birth rates. The pyramids for Bangladesh and Mexico would also look the same.