Humans Now Use Approximately 30-35 Percent of the Terrestrial Net

Humans now use approximately 30-35 percent of the terrestrial net primary productivity (NPP) .One result of this increased human control of NPP is that

A) human hunger has been virtually eliminated.
B) the number of species on Earth has increased.
C) humans are often in direct competition with other species for food and other natural resources.
D) we have learned how to manage Earth's resources so that all species have the resources they need to survive.