The correct answer is The President of India. Explanation & Key Takeaways: • According to Article 239 of the Constitution of India, every Union Territory shall be administered by the President of India acting through an administrator appointed by him. • The administrator of a Union Territory is an agent of the President and is not a formal head of state like the Governor of a state; they exercise power only to the extent delegated by the President. • The President has the authority to specify the designation of the administrator, which varies across different territories as Lieutenant Governor or Administrator. • Under Article 239(2), the President can also appoint the Governor of an adjoining state as the administrator of a Union Territory, where the Governor exercises their functions independently of their state Council of Ministers. Related Concepts: • The Parliament of India: • While the President appoints the administrator, it is the Parliament that holds the power under Article 3 to create a new Union Territory, alter boundaries, or change names through legislation. • Parliament can also create a Legislature or a Council of Ministers for certain Union Territories like Puducherry under Article 239A. • Administrative Designations: • Lieutenant Governors: Appointed for Delhi, Puducherry, Andaman and Nicobar Islands, Jammu and Kashmir, and Ladakh. • Administrators: Appointed for Chandigarh, Dadra and Nagar Haveli and Daman and Diu, and Lakshadweep. • Special Provisions: • Article 239AA provides special provisions for the National Capital Territory of Delhi, outlining the relationship between the Lieutenant Governor and the elected Legislative Assembly.