how does the circulatory system and the respiratory system work together?

a. the circulatory system transports oxygen around the body while the respiratory system gives the body oxygen

b. the circulatory system makes sense while the respiratory system moves them where they are suppose to go

c. the circulatory system allows the body to have energy while the respiratory system makes cells

d. the circulatory system transports nutrients around the body while the respiratory system brings oxygen into the body

correct answer Po​