B. It was established to help the president perform his duties.
The correct answer is D. Total growth minus increases in capital and labor.
The one that could affect human population would be :
A. Deadly virus emerges that can pass from human to human.
This will greatly decrease the amount of human population
C. Nuclear war breaks out between two nations
This will kill a lot of people and also potentially creating genetic mutations for the next generation
D. Immigration to united states from china increases
This will make it harder for the population to get the resources that they need for their living
hope this helps
