Correct Answer: Union of States

Solution : The correct option is Union of States.

According to Article 1 of the Indian Constitution, India is a "Union of States." This proclamation represents India's federal structure, in which authority is shared between the central (Union) government and various states. It creates India as a union of states, union territories, and any further areas that may be acquired. This article establishes the framework for the division of authorities and duties within the Indian federal system between the central government and the various states and territories. It exemplifies the unity in diversity that is a defining feature of India's political structure.