Which of the following Constitutional Amendment Act added the Right to Education to the Indian constitution?

86th

The correct answer is Option 4 - 86th

The Constitutional Amendment in India that mandates the state to provide free and compulsory education to all children between the ages of six and fourteen years is the 86th Constitutional Amendment Act of 2002. This amendment inserted Article 21-A into the Indian Constitution, which guarantees the right to education as a fundamental right. It came into effect on April 1, 2010.