Question

what do bears do to survive the winter?
sharpen their claws
migrate
hibernate
eat less food

Explanation:

Bears survive winter by entering a state of dormancy called hibernation, where their metabolism slows to conserve energy when food is scarce. Sharpening claws is not a winter survival adaptation; migration is typical of animals like birds, not bears; and bears actually eat large amounts of food before winter, not less.

Answer:

hibernate