Answer:
B. To use a comparison to explain the way a heart functions.
Step-by-step explanation:
Human heart is not ideally a pump but for a surgeon to use pump to describe the functioning of the heart is to draw home the least likely possibility of how the heart works.
The heart regulates the distribution of blood along the various organs and parts of the body through the circulatory system. Supply oxygen and nutrients, while removing carbon dioxide and wastes.