The correct answer is option 3: Right to citizenship. The Constitution of India provides certain fundamental rights to its citizens to ensure their protection and well-being. These fundamental rights are enshrined in Part III of the Constitution and are enforceable by the courts.

Option 1, Right to equality, is a fundamental right guaranteed under Article 14 to 18 of the Constitution. It ensures that all individuals are treated equally before the law, and prohibits discrimination on the grounds of religion, race, caste, sex or place of birth.

Option 2, Right to freedom, is also a fundamental right guaranteed under Article 19 to 22 of the Constitution. It includes the freedom of speech and expression, freedom to assemble peacefully, freedom to form associations or unions, freedom to move freely throughout the territory of India, and the right to practice any profession, occupation or trade.

Option 4, Right against exploitation, is another fundamental right guaranteed under Article 23 and 24 of the Constitution. It prohibits trafficking, forced labor, and child labor.

Option 3, Right to citizenship, however, is not mentioned as a fundamental right in the Constitution. The conditions and process of acquiring citizenship are governed by separate laws such as the Citizenship Act, 1955.

In conclusion,