the answer would be d i'm pretty sure.. i could be wrong tho..
I’d say, Humans have the ability for rational thought
Hope it works. Good luck :)
Answer:
The left side of the heart receives oxygenated blood from the pulmonary vein and pumps it into the aorta, while the right side of the heart receives deoxygenated blood from the vena cava and pumps it into the pulmonary vein. The pulmonary vein and aorta also have valves connecting them to their respective ventricle.
Explanation:
Hi the answer is in children who are younger than six years of age.
Hope this helps you.