Why Is It Not So Critical to Have Many Children

Why is it not so critical to have many children in developed countries as it is in developing countries?

A) People in developed countries are better educated and know they can't support more than a few children.
B) People in developed countries tend to live in cities, and there isn't as much room for children.
C) People in developing countries are mostly rural and need the children to help work the farms.
D) People in developing countries need to sell off as many children as possible to support the children who stay home.
E) People in developing countries tend to be judged powerful or not depending on their number of children.