The correct answer is option 1: Australia.

Kangaroos, Platypus, and Koala bears are wildlife species that are native to Australia. Australia is known for its unique and diverse wildlife, with many species found nowhere else in the world. Kangaroos are large marsupials that are well-known for their hopping locomotion. Platypus is a peculiar mammal that lays eggs and has a duck-like bill. Koala bears are arboreal marsupials that feed primarily on eucalyptus leaves. These animals are iconic symbols of Australian wildlife and are found in various habitats across the country, including forests, grasslands, and coastal regions. It is important to note that none of these wildlife species are found in South America, Europe, or Africa.