C) receive blood that comes into the heart
Step-by-step explanation:
The atria, specifically the left atrium and the right atrium, function to receive blood that enters the heart from the body and the lungs. They act as collecting chambers that receive deoxygenated blood from the body into the right atrium and oxygenated blood from the lungs into the left atrium, which is then pumped into the ventricles for further circulation.