_________, an island beach, is located at Chunnambar, Pondicherry.

Answer: Option B

Paradise Beach, also known as Plage Paradiso, is a famous island beach located at Chunnambar, near Pondicherry. It is accessible via a short boat ride from the Chunnambar Boat House, which is situated about 8 km from the main town of Puducherry.

The beach is known for its pristine sands, clear waters, and tranquil atmosphere, making it a popular destination for both tourists and locals. It is less crowded compared to urban beaches, offering a peaceful retreat with options for beach sports, picnics, and scenic views.

The other options are not correct in this context:
Mahe beach is located in the Mahe district of Puducherry, not near Chunnambar.
Yanam Beach is located in the Yanam region, in Andhra Pradesh.
Promenade Beach is a well-known beach in the heart of Pondicherry city, but it is not an island beach and is not located at Chunnambar.

Therefore, Paradise Beach is the correct answer — it is the island beach located at Chunnambar, Pondicherry.