Q: The ability to maintain a stable internal temperature, despite the climate, is exhibited by members of what animal group?


Read this paragraph and choose the correct option from the provided answers:

Not really. Like all mammals, polar bears maintain a stable internal temperature. They do not need to stay warm by lying in the sun. This allows them to live in cold climates.

 Choices:

- fish

- parasites

- reptiles

- mammals


A:
mammals