The correct answer is letter A. a treaty signed by 190 countries whose goal is to limit the spread of nuclear weapons.
Here are the choices. A. <span>a treaty signed by 190 countries whose goal is to limit the spread of nuclear weapons </span> <span>B. </span><span>a treaty signed by five countries after World War II pledging not to use nuclear weapons </span> <span>C. </span><span>a treaty signed by the US and Soviet Union to freeze the number of ballistic missiles </span> <span>D. </span>a treaty signed by the US and North Korea to reduce the number of nuclear warheads