Explanation:

Amendments and DPSP added: 42nd Constitutional Amendment, 1976: It introduced certain changes in the part-IV of the Constitution by adding new directives: ? Article-39: To secure opportunities for healthy development of children. ? Article-39A: To promote equal justice and to provide free legal aid to the poor. ? Article-43A: To take steps to secure the participation of workers in the management of industries. ? Article-48A: To protect and improve the environment and to safeguard forests and wild Life. 44th Constitutional Amendment, 1978: It inserted Section-2 to Article 38 

? Article-38: Which declares that; “The State in particular shall strive to minimise economic inequalities in income and eliminate inequalities in status, facilities and opportunities not amongst individuals but also amongst groups”. 86th Amendment Act of 2002: ? It changed the subject-matter of Article-45 and made elementary education a fundamental right under Article-21A. 97th Amendment Act of 2011 added: ? Article-43B: It requires the state to promote voluntary formation, autonomous functioning, democratic control and professional management of co-operative societies. (Hence option (b) is correct answer)