What is required to change a fundamental right?

The correct answer is Option 3 - An amendment to the Constitution

Changing a fundamental right requires an amendment to the Constitution, which is a more complex and stringent process than changing ordinary laws.

Fundamental Rights are different from other rights available to us. While ordinary legal rights are protected and enforced by ordinary law, Fundamental Rights are protected and guaranteed by the constitution of the country. Ordinary rights may be changed by the legislature by the ordinary process of law-making, but a fundamental right may only be changed by amending the Constitution itself. Besides this, no organ of the government can act in a manner that violates them.