Which of the following is one way that the circulatory system maintain body temperature? a. carrying heat around the body b. controlling the flow of blood to the skin c. carrying nutrients and energy to cells d. speeding up the blood flow to generate heat

The correct answer is B. controlling the flow of blood to the skin

The more blood there is, the more heat there will be because of blood. An easy example is when someone's ears get all red due to a blood rush to the ears. At that time, ears are also very warm.