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.

Explanation:

In human anatomy, the heart is composed of four chambers: two atria (upper chambers) and two ventricles (lower chambers). This is a well - known fact in the field of biology (a subfield of Natural Science) related to the structure of the heart.

Answer:

B. 4