Administrators of the Andaman and Nicobar Islands and Puducherry are designated as _________.

The correct option is Lieutenant Governor.

In India, Union Territories (UTs) are governed directly by the Central Government through administrators appointed by the President of India under Article 239 of the Constitution of India.

The administrative head of certain Union Territories, including the Andaman and Nicobar Islands, Puducherry, and Delhi, is designated as the Lieutenant Governor (L-G). In contrast, some other Union Territories like Chandigarh and Lakshadweep have administrators designated simply as "Administrator".