Four phrases/sentences have been removed from the text below. For each question, mark the letter A, B, C, or D on your answer sheet to indicate the correct option that best fits each of the numbered b

The Earth is home to countless natural wonders that showcase its incredible beauty and diversity. These breathtaking sites are found in every corner of the globe, attracting millions of visitors each year. One of the most famous natural wonders is the Grand Canyon in the United States, a massive gorge carved by the Colorado River over millions of years. Its towering cliffs and colorful layers of rock leave visitors in awe. ___(1)___.
Another well-known natural wonder is Mount Everest, the highest peak in the world. Located in the Himalayas, it stands as a symbol of adventure and human determination. ___(2)___. Climbing it is a dream for many, but it comes with great risks and challenges.
The Great Barrier Reef in Australia, the largest coral reef system in the world, is another marvel. Home to thousands of marine species, it is a vital ecosystem that must be protected from climate change and pollution. ___(3)___.
Finally, Victoria Falls on the border of Zambia and Zimbabwe is one of the largest waterfalls in the world. Known as "The Smoke That Thunders," its roaring waters create a mist that can be seen from miles away. ___(4)___.
These wonders remind us of nature's power and beauty, inspiring efforts to preserve them for future generations.

A. It is also a UNESCO World Heritage Site due to its ecological importance.
B. Many visitors are drawn to its stunning views and challenging terrain.
C. This natural wonder demonstrates the power of water and erosion.
D. These features make it one of the most famous landmarks on Earth.