Step 1: Understanding DPSPs.
Directive Principles of State Policy (Part IV of the Constitution, Articles 36–51) guide the State in governance. They are not enforceable in courts but promote social and economic welfare.
Step 2: Identifying the Correct Option.
"Equal pay for equal work" is a Directive Principle under Article 39(d). It directs the government to ensure that men and women receive equal wages for the same work, promoting socio-economic justice.
Step 3: Eliminating Incorrect Options.
(A) Right to Equality (Articles 14–18) is a Fundamental Right, not a DPSP.
(B) Right to Freedom (Articles 19–22) is also a Fundamental Right.
(D) Right to Education (Article 21A) is a Fundamental Right, not a DPSP (though earlier it was in Article 45 as a DPSP).
Step 4: Conclusion.
Therefore, the statement belonging to DPSP is "Equal pay for equal work".