The Atria Are the Heart's Entryways for Blood
The left atrium and right atrium are the two upper chambers of the heart. The left atrium receives oxygenated blood from the lungs. The right atrium receives deoxygenated blood returning from other parts of the body.
The heart
In terms of parasites vs hosts, it is an organism in which the parasite resides and normally feeds + reproduces.
Answer: I think it might be C
Explanation:
Because it tell you the same info that was in the text then in the question.
