A) 2
B) 4
C) 3
D) 5
🧠 Explanation:
The human heart has four chambers: two atria and two ventricles. The right atrium receives deoxygenated blood from the body and sends it to the right ventricle, which pumps it to the lungs. The left atrium receives oxygenated blood from the lungs, passing it to the left ventricle to circulate throughout the body. “Chambers” is a noun describing compartments, and “four” indicates quantity. Alternatives include “cardiac chambers” or “heart compartments.” Hence, the correct answer is 4.
