In the Past, There Were 20 Times More Children Than

Multiple Choice

In the past, there were 20 times more children than older people. Then there were 7 times more people under age 15 than over age 64. Currently, there are 3 times as many children as there are elders. These changes in the age make-up of the population are referred to as a(n) "_____."

A) population growth
B) cyclical event
C) demographic shift
D) elder explosion