The correct answer is: C. Dalmatian : dog
A finch is a type of bird, and a Dalmatian is a type of dog. Both finches and Dalmatians are members of larger groups of animals, finches being a type of bird and Dalmatians being a type of dog. Both finches and Dalmatians have distinctive features that set them apart from other members of their groups, such as the finch’s long tail and the Dalmatian’s spotted coat. Both finches and Dalmatians are popular pets, and both have been used in various roles throughout history, such as hunting and herding.
The other options are not as similar to the original pair of words. A frog is a type of amphibian, while a toad is also a type of amphibian. Elephants are mammals, while reptiles are a different class of animals. Collies are a type of dog, while marsupials are a different class of animals. Ants are insects, while ladybugs are also insects.
Therefore, the correct answer is: C. Dalmatian : dog