A Human Population with a Large Percentage of Pre-Reproductive Individuals

A human population with a large percentage of pre-reproductive individuals

A) is common in less-developed countries and will most likely increase in size.
B) is common in more-developed countries and will most likely increase in size.
C) is common in less-developed countries and will most likely decrease in size.
D) is common in more-developed countries and will most likely decrease in size.