The correct answer is: a) Young population.
A population pyramid is a graphical representation of the age and sex structure of a population. It is typically drawn with the youngest age groups at the bottom and the oldest age groups at the top, and with males on the left and females on the right. The width of each bar represents the proportion of the population in that age group.
A young population is one with a large proportion of people in the younger age groups. This can be seen in a population pyramid with a wide base and a narrow top. A young population is often associated with high fertility rates and rapid population growth.
A high dependency ratio is a situation in which there are a large number of people of working age supporting a small number of people who are not of working age. This can be seen in a population pyramid with a wide base and a narrow top. A high dependency ratio can put a strain on a country’s economy, as there are fewer people working to support the economy.
A rapidly aging population is one with a large proportion of people in the older age groups. This can be seen in a population pyramid with a narrow base and a wide top. A rapidly aging population can put a strain on a country’s economy, as there are fewer people working to support the economy.
A declining population is one with a decreasing number of people. This can be seen in a population pyramid with a shrinking base. A declining population can be caused by low fertility rates, high mortality rates, or emigration.
In the case of Assam, the population pyramid indicates a young population. This is because the base of the pyramid is wide and the top is narrow. This means that there are a large number of people in the younger age groups and a small number of people in the older age groups. This is likely due to the high fertility rates in Assam.