Which Constitutional Amendment Act added new Directive Principles to the Constitution, namely equal justice and free legal aid, and the participation of workers in the management of industries?

Given below are two statements: Assertion (A): India is not a signatory to the Nuclear Non-Proliferation Treaty (NPT). Reason (R): The NPT recognizes only the five permanent members of the UN Security Council (P5) as legitimate nuclear-weapon states. Select the correct answer:

Which of the following is NOT a Fundamental Right under Part III of the Constitution of India?