Read the Following Scenario and Answer the Question Below

Read the following scenario and answer the question below.
Population growth is at the root of many serious environmental problems. From the ancient Babylonians thousands of years ago, to Thomas Malthus two centuries ago, to present day neo-Malthusians, humans seem to possess an awareness of Earthʹs limitations in the face of growing populations. Today, our ability to accurately quantify, monitor, and control population growth is very sophisticated. We can measure growth and make predictions about world growth with mathematical and computer models. Can we prevent disaster?
-Because of the success of Chinaʹs population control programs,________________ .

A) Chinaʹs population growth rate is much lower than it was in the 1970s
B) there is a younger population in China today
C) African nations have instituted similar programs
D) environmental problems in China have been virtually eliminated
E) European nations have instituted similar programs