Name a significant natural feature of the South Island.

Milford Sound is a significant natural feature of the South Island and is renowned for its stunning fjord-like scenery characterized by towering cliffs, deep waters, and impressive waterfalls. It is located within Fiordland National Park, a UNESCO World Heritage site, which highlights its ecological and aesthetic importance. Visitors to Milford Sound can experience breathtaking views of the dramatic landscape, especially the majestic Mitre Peak and the serene waters of the sound. The area is also known for its unique biodiversity, including seals, dolphins, and a variety of bird species, making it a popular destination for nature lovers and tourists seeking outdoor adventures such as kayaking, boat cruises, and hiking.

In contrast, the other choices refer to significant natural features located in different regions of New Zealand. The Bay of Islands is situated in the North Island and is known for its picturesque bays and islands. Rangitoto Island is also a feature of the North Island, specifically notable for its volcanic landscape and role as a prominent landmark in Auckland's harbor. Lastly, the Coromandel Peninsula, located on the North Island, is famous for its stunning beaches and native forests. While each of these features is noteworthy, they do not represent the South Island's dramatic and iconic natural landscape as exquisitely showcased by