Please choose the correct answer to the question: Which behavior can help animals establish a territory?

Answer1: A caribou herd migrates seasonally. Answer2: A scent trail leads ants to a food source. Answer3: A wolf pack howls to warn other wolves to stay away. Answer4: A honeybee society divides the work between its members.

Answer format: answer1/answer2/answer3/answer4
Answer: answer3