The Figure Below Shows That the Human Population Was Small

The figure below shows that the human population was small and relatively stable for nearly 12,000 years, but has increased dramatically in the past 200 years.
How might this increase in population growth be explained?

A) Disease prevented any significant growth of the human population.
B) For most of human history people were too malnourished to have children.
C) People simply chose to have fewer children in the past than at present.
D) Prior human populations were at existing carrying capacities but newly developed technologies have raised the carrying capacity and permitted the recent expansion.