If All the People in the World Were to Live

Multiple Choice

If all the people in the world were to live at the American level in terms of technology, wealth, education, and other factors, the population of the world would have to ________ in order to support them.

A) double
B) reduce by half
C) reduce to a fifth of the current level
D) reduce to less than a tenth of the current level
E) decrease by 90%