Which of the following international agreements was signed by Pakistan in 2004 to prevent the proliferation of nuclear weapons?

Correct Answer: D: Additional Protocol to the Safeguards Agreement

Explanation: The correct answer is the Additional Protocol to the Safeguards Agreement, which Pakistan signed in 2004 to strengthen its commitment to preventing the proliferation of nuclear weapons. The Additional Protocol allows for more intrusive inspections and monitoring of nuclear facilities, and it has been an important step in Pakistan's efforts to demonstrate its commitment to non-proliferation. Options like the Nuclear Non-Proliferation Treaty, Comprehensive Nuclear-Test-Ban Treaty, and Fissile Material Cut-Off Treaty are incorrect, as they are different international agreements. Pakistan's signing of the Additional Protocol marked an important development in its nuclear policy, and it is occasionally covered in FPSC, CSS, and NTS papers, highlighting Pakistan's role in international non-proliferation efforts.