A good adaptation for living in a grassland would be

A few of these adaptations are: Some animals, such as bison, have broad, flat-topped teeth and digestive systems especially adapted to feed on grasses. Many prairie animals have front legs and paws that allow them to burrow into the ground, where they are protected from predators.

Explanation:

the answer is d (apex) good luck : ))

a. by using fur or clothes to trap heat energy near the body