The age and sex of a country can be described by?

Correct option is C

Sol. A Population Pyramid is a graphical representation that shows the distribution of various age groups and sex in a population. It typically has males on one side and females on the other, with age groups arranged vertically, helping demographers understand population structure and trends.
Explanation of each option:
· (a) Pie Chart – A pie chart shows proportions or percentages of categories but cannot accurately represent age and sex simultaneously.
· (b) Density of Population – This shows the number of people per unit area (e.g., per sq. km), not their age or sex structure.
· (c) Population Pyramid – Correct. This graph specifically depicts age and sex, which is essential for demographic analysis.
· (d) All of these – Incorrect. Only the population pyramid clearly describes both age and sex in one visual.