Step 1: Understanding the Concept:
The Directive Principles of State Policy (DPSP) are enumerated in Part IV of the Indian Constitution (Articles 36 to 51). They are guidelines for the central and state governments of India to be kept in mind while framing laws and policies. Unlike Fundamental Rights, they are not justiciable (not enforceable by any court).
Step 2: Detailed Explanation:
Let's examine each statement in the context of the Indian Constitution:
A. Equal justice and free legal aid: This is explicitly mentioned in Article 39A of the Constitution, which is part of the DPSP. It was added by the 42nd Amendment, 1976.
B. Maternity relief: Article 42 of the Constitution, a part of the DPSP, directs the State to make provision for securing just and humane conditions of work and for maternity relief.
C. Composition of the Council of States: The composition of the Council of States (Rajya Sabha) is detailed in Article 80, which is in Part V of the Constitution (The Union). This is a structural provision related to the legislature, not a Directive Principle.
D. Promotion of cooperative societies: Article 43B, part of the DPSP, was added by the 97th Amendment Act, 2011. It directs the state to promote voluntary formation, autonomous functioning, democratic control, and professional management of co-operative societies.
Step 3: Final Answer:
Statements A, B, and D are part of the Directive Principles of State Policy, while statement C is not. Therefore, the correct option includes A, B, and D only.