(a) Union of States: This means that India is a federation comprising states and union territories. It emphasizes the unity of the country while recognizing the diversity and autonomy of its states.

(b) Federal State with Unitary Features: India operates as a federal state where power is divided between the central government and individual states. However, there are certain unitary features, such as a strong central authority in matters like defense and national security.

(c) Federal State with Federal Features: This is not a term used to describe the Indian political system. India is often termed as a federal state with unitary features.

(d) Federal State: This term generally implies a political entity where power is shared between a central government and regional entities. India is indeed a federal state where states have their own governments and certain powers, alongside a strong central government.

The Right to Property in India is recognized as a legal right under Article 300-A of the Indian Constitution. It means that individuals have the right to own and use property, and they cannot be deprived of their property except by authority of law. However, it is no longer a fundamental right, which means that the government can impose reasonable restrictions on property ownership. While individuals have legal protection for their property, it is subject to certain limitations defined by law.