Please choose the correct answer to the question: A horse in a field under the summer sun was glistening wet even though it hadn't rained.

Answer1: the other horses were licking that horse Answer2: sweat glands released liquid to cool off the horse Answer3: sweat glands dried up Answer4: The horse needed a shower and was getting oily

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