The nuclear non-proliferation treaty sought to a. stop all nuclear testing on the earth or in outer space b. eliminate all hydrogen bombs c. reduce the number of nuclear weapons held by major powers d. prevent the spread of nuclear weapons to nations that did not already have them

The Nuclear Non-Proliferation Treaty sought to D) prevent the spread of nuclear weapons to nations that did not already have them.  The goal of the treaty was also to C) reduce the number of nuclear weapons held by major powers or any states possessing nuclear weapons with the general goal of nuclear disarmament.