Which one out of the following is not a directive principle of state policy?

The Right to Free Education for children from the age of 6-14 years has been included as a Fundamental Right under Article 21(A) of the 86th Constitutional Amendment Act, 2002. This amendment added free education as a fundamental right and not under the Directive Principles of State Policy, which are non-justiciable. • Prohibition (Article 47), Cow-protection (Article 48), and Environmental protection (Article 48A) are Directive Principles outlined in the Constitution. Thus, the correct answer is (d) Free education to children below 14 years age.