Many Economists Believe That in Less-Developed Countries

Many economists believe that in less-developed countries,

A) families tend to be smaller than in developed countries, because of the higher infant mortality rate
B) families tend to be larger than in developed countries, because children are a source of labor
C) families tend to be larger in urban areas
D) family members tend to live longer than in developed countries because of lack of stress
E) family members tend to live longer than in developed countries because of lack of pollutants