Which of the following diagrams shows the age and sex distribution of members of a population?

Correct option is D

The correct answer is (d) Population Pyramid 

Explanation:
• A population pyramid (also called an age-sex structure diagram) is a graphical illustration that shows the distribution of various age groups in a population, which typically forms the shape of a pyramid when the population is growing.
• The horizontal axis represents the population size or percentage, and the vertical axis represents age cohorts, with males typically on the left and females on the right.
• It provides a clear visual representation of the age and sex composition of a population, which helps in understanding demographic trends like birth rates, death rates, and life expectancy. 

Information Booster:
• A wide base and narrow top indicate a rapidly growing population, while a more rectangular shape indicates a stable or declining population. 

Additional Knowledge:
(a) Population Square .:
• This is not a standard demographic term. 

(b) Population Hexagon .:
• This is not a standard demographic term. 

(c) Population Circle .:
• This is not a standard demographic term; pie charts might show proportions but not age/sex distribution in this specific manner.