Purpose of the 1968 NPT Treaty?

The 1968 Treaty on the Non-Proliferation of Nuclear Weapons (NPT) is a landmark international treaty whose fundamental objective is to prevent the spread of nuclear weapons and weapons technology. Its core purpose is to curb the proliferation of nuclear arms globally, thereby enhancing international peace and security. Therefore, option B, prevent spread of nuclear weapons, is the accurate primary purpose. While promoting nuclear disarmament (A) is a long-term goal of the NPT, it is distinct from its immediate non-proliferation aim. Banning tests of nuclear weapons (C) is addressed by other treaties like the CTBT. Limiting nuclear energy use (D) is incorrect, as the NPT actually promotes the peaceful use of nuclear energy under international safeguards.