The correct answer is B) Growth of additional nuclear countries had to be limited.
What was NOT one of the main points to the Nuclear Non-Proliferation Treaty was "Growth of additional nuclear countries had to be limited."
Signed on July 1, 1968, the Nuclear Non-Proliferation Treaty was an agreement reached by powerful nations in order to limit the spread of nuclear weapons around the world. In that time, powerful countries such as China, France, the United States, The Soviet Union, and Great Britain had the technology to develop nuclear weapons.