Context: Read the first part of the passage about arctic foxes.
Arctic foxes live in very cold places. Their fur coats keep them warm.
Their tails help keep them warm, too. These foxes have big, bushy tails. They put their tails around their bodies when they go to sleep.
Complete the sentence.
Arctic foxes use their tails to ().
A. hide food
B. keep warm
C. move around
Pick the correct answer from the listed options and provide the letter of the selected option.

B