The correct answer is B. Furry feet
Step-by-step explanation:
An adaptation refers to one behavior or feature that increases an organism able to survive or reproduce. Adaptations are the result of evolution and are necessary to survive in a specific environment or under certain conditions. For example, chameleons' ability to change their color is an adaption that allows them to avoid predators and in this way survive.
In the case of a polar region, one adaptation for this ecosystem is furry feet because this morphological feature would allow animals to preserve an appropriate temperature and therefore survive in this cold environment. This adaptation can be seen in animals such as polar bears that have evolved to survive in the conditions of the polar region.