Which organ is part of the cardiorespiratory system? Lungs brain liver kidney question 3?

The right option is; Lungs

The cardiorespiratory system is made up of the heart and blood vessels, which functions with the respiratory system (the airways and lungs). The main function of the cardiorespiratory system is to eliminate waste products, including carbon dioxide, to maintain blood pressure, and to transport oxygen to the muscles and other organs of the body.