Teressa Island belongs to which Union Territory of India located in the Bay of Bengal region?

Introduction / Context:
This question tests your knowledge of Indian islands and Union Territories. Teressa Island is one of the lesser known islands, and the question requires you to identify the Union Territory to which it belongs. Understanding the grouping of islands is an important part of Indian geography.

Given Data / Assumptions:

• The place named in the question is Teressa Island.
• The task is to identify its Union Territory.
• Options include Andaman and Nicobar Islands, Puducherry, Delhi, Lakshadweep and Dadra and Nagar Haveli and Daman and Diu.
• We know that Andaman and Nicobar Islands and Lakshadweep are island Union Territories, while the others are mainland or different types of territories.

Concept / Approach:
Teressa Island is part of the Nicobar group in the Union Territory of Andaman and Nicobar Islands, located in the eastern Indian Ocean and the Bay of Bengal region. It is not part of Lakshadweep, which consists of small coral islands in the Arabian Sea. Nor is it part of mainland based Union Territories such as Puducherry, Delhi or the combined Dadra and Nagar Haveli and Daman and Diu.

Step-by-Step Solution:
Step 1: Recognise that Teressa Island must belong to an island Union Territory rather than a landlocked area. Step 2: Recall that Andaman and Nicobar Islands and Lakshadweep are the two main island Union Territories of India. Step 3: Remember that the Nicobar group, including Teressa Island, lies in the Bay of Bengal and eastern Indian Ocean region. Step 4: Note that Lakshadweep consists of coral atolls in the Arabian Sea and does not include Teressa. Step 5: Select Andaman and Nicobar Islands as the correct Union Territory.

Verification / Alternative check:
Verification can be done using an atlas or a detailed map of the Andaman and Nicobar Islands. You will find the Nicobar group listed with islands such as Car Nicobar, Katchal, Teressa and others. Government information about districts and tehsils in Andaman and Nicobar Islands also lists Teressa as part of this Union Territory, confirming the answer.

Why Other Options Are Wrong:
Puducherry is a Union Territory with several enclaves on the mainland of India and does not contain Teressa Island. Delhi is a landlocked National Capital Territory and has no islands. Lakshadweep comprises small coral islands in the Arabian Sea off the western coast of India, not in the Bay of Bengal. Dadra and Nagar Haveli and Daman and Diu is a combined Union Territory on the western side of India again without any island named Teressa in its jurisdiction.

Common Pitfalls:
Students sometimes confuse Lakshadweep with Andaman and Nicobar because both are island territories. Another pitfall is to guess based only on the unfamiliar name without recalling the basic map layout of Indian island territories. To avoid such mistakes, always remember that Andaman and Nicobar lie towards the south east in the Bay of Bengal, while Lakshadweep lies towards the south west in the Arabian Sea.

Final Answer:
Andaman and Nicobar Islands