Answer:
A. They provide a way to study the overall age demographics of a population.
Explanation:
" it's a summary of the number of individuals of each age in the population. Age structure is useful in understanding and predicting population growth."
Answer: Hence, Option 'a' is correct.
Explanation:
Age structures is the proportion of population that belongs to different age group.
The purpose of age structure is that it provide a way to study the overall age demographics of a population.
With the age structures, we get to know about the prevailing age groups mostly present in particular area or country or world wide.
Hence, Option 'a' is correct.
