Question

how many chambers does the heart contain?
a. 3
b. 4
c. 5
d. 6
please select the best answer from the choices provided.
a
b
c
d

Explanation:

The human heart has four chambers: two atria (upper chambers) and two ventricles (lower chambers). This is a basic fact in the study of human biology (a subfield of Natural Science).

Answer:

B. 4