The correct answer is option 1: Fundamental Duties. Article 51A (Part-IV A) of the Indian Constitution outlines the Fundamental Duties of citizens. These duties were added to the Constitution through the 42nd Amendment Act in 1976.

Under Article 51A, it is the duty of every citizen of India to abide by the Constitution and respect its ideals and institutions. The fundamental duties also include promoting harmony and the spirit of common brotherhood among citizens, preserving the rich heritage and culture of India, protecting and improving the natural environment, and safeguarding public property.

Additionally, citizens have a duty to develop scientific temper, humanism, and the spirit of inquiry and reform. They should also strive towards excellence in all spheres of individual and collective activity and renounce practices derogatory to the dignity of women.

It is important to note that while the fundamental rights are justiciable and can be enforced by individuals through the courts, the fundamental duties are non-justiciable and cannot be enforced through legal proceedings. However, they serve as moral obligations and guidelines for responsible citizenship.