The correct answer is option 3: Right to Constitutional Remedies. Fundamental Rights in India are guaranteed by the Constitution through various provisions. The Right to Constitutional Remedies is one of the key provisions that ensures the enforcement of all other fundamental rights.

Option 1: The Right to Equality is indeed a fundamental right in India, but it is not the provision that guarantees fundamental rights.

Option 2: Right Against Exploitation is also a fundamental right, but it is not the provision that guarantees fundamental rights.

Option 4: Educational and Cultural Rights are important, but they are not the specific provision that guarantees fundamental rights in India.

Therefore, option 3, the Right to Constitutional Remedies, is the provision that guarantees fundamental rights in India. It allows individuals to seek legal remedy in case their fundamental rights are violated.