Answer:
A) The same blood flowed through the veins and arteries.
Step-by-step explanation:
William Harvey (1578-1657) was a British physician that lived from 1578 to 1657. He studied medicine at Padua, Italy, and became Royal Physician for kings James I and Charles I.
He was the first person to correctly describe how the human body's circulatory system works. He described how the heart, veins and arteries form one single complete circuit that extends through the whole human body.