One important feature of the world's population with the most significant future implications is that

One important feature of the world's population with the most significant future implications is that
( ) the natural increase rate is larger every year.
( ) there are fewer people in the world now than at the peak in the middle of the twentieth century.
( ) the most rapid growth is occurring in the less developed countries.
( ) people are uniformly distributed across Earth.
( ) the less developed countries have the highest combined crude death rate.

Answer( x) the most rapid growth is occurring in the less developed countries.