What three human body systems does the following statement describe: "Blood vessels carry nutrients (like glucose) and oxygen to the cells for cellular respiration and the generation of energy. Blood vessels carry cellular wastes (like carbon dioxide and urea) away from cells. "
a. Circulatory, Respiratory, Excretory
b. Digestive, Respiratory, Excretory
c. Circulatory, Respiratory, Immune
d. Circulatory, Endocrine, Excretory