What is the term used to describe the resulting structure when the age distribution is plotted for a population?

Age pyramid

The correct term used to describe the resulting structure when the age distribution is plotted for a population is "age pyramid." An age pyramid is a graphical representation that shows the distribution of different age groups within a population. It typically consists of a bar chart with age groups represented on the horizontal axis and the number or percentage of individuals in each age group represented on the vertical axis. The shape of the age pyramid can provide valuable information about the population, such as its growth rate, life expectancy, and demographic trends.

(a) Age graph: This term generally refers to a graphical representation that displays the relationship between age and another variable, such as income or education. It is a broader term and not specifically related to population age distribution.

(b) Age curve: This term is not commonly used to describe the age distribution of a population. It could refer to a graph that shows the relationship between age and a specific variable, similar to an age graph.

(c) Age pyramid: This is the correct term used to describe the resulting structure when the age distribution is plotted for a population. It represents the distribution of different age groups, typically divided into male and female, with the youngest age groups at the bottom and the oldest age groups at the top. The shape of the age pyramid can provide insights into the population's birth rates, death rates, and overall population growth.

(d) Age diagram: This term is not commonly used in the context of population age distribution. It does not accurately describe the graphical representation of age distribution in a population.

In summary, the correct term for the resulting structure when the age distribution is plotted for a population is "age pyramid" (option c).