Please choose the correct answer to the question: Isabel goes jogging for two miles on a sunny afternoon. At the end of her run, she is warmer. As Isabel jogs, which function does the skin perform to help stabilize her body temperature?

Answer1: Her skin exchanges oxygen and carbon dioxide. Answer2: Her skin produces red blood cells. Answer3: Her skin releases hormones. Answer4: Her skin discharges water.

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