Read the following passage and mark the letter A, B, C, or D to indicate the correct answer to each of the questions from 29 to 33.

Con Dao Island, located off the southern coast of Vietnam, is an archipelago comprising 16 islands known for their pristine beaches, crystal-clear waters, and rich biodiversity. Steeped in history, Con Dao served as a notorious prison during the French colonial era and the Vietnam War, earning it the moniker "Devil's Island."

Despite its dark past, Con Dao has emerged as a popular tourist destination renowned for its natural beauty and serene atmosphere. The main island, Con Son, is the largest and most developed, offering visitors a range of attractions and activities to enjoy. One of the island's highlights is Con Dao National Park, a protected area surrounded by lush forests, rugged mountains, and diverse wildlife, including endangered species such as sea turtles and dugongs.

Beaches on Con Dao Island are pristine and uncrowded, with soft white sands and clear waters ideal for swimming, snorkeling, and sunbathing. Some of the most popular beaches include Dam Trau, Bai Nhat, and An Hai. Visitors can also explore historical sites such as the Con Dao Prison, which provides insight into the island's dark past and the struggles endured by Vietnamese revolutionaries.

For nature enthusiasts, Con Dao offers excellent opportunities for hiking, birdwatching, and wildlife spotting. The island's diverse ecosystems support a wide range of flora and fauna, making it a paradise for eco-tourism and outdoor activities.

Overall, Con Dao Island offers visitors a unique blend of natural beauty, cultural heritage, and outdoor adventure, making it an unforgettable destination for travelers seeking a tranquil escape in Vietnam.

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