13. Oxygen and food are delivered to the body's cells by

A. arteries
B. capillaries
C. veins
D. all of the above



Answer :

Final answer:

Capillaries deliver oxygen and food to the body's cells in coordination with arteries and veins.


Explanation:

Capillaries are responsible for delivering oxygen and food to the body's cells. They are like neighborhood streets, working alongside arteries and veins, the body's main highways, to provide a pathway for nutrients and waste removal.


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