It leaves the reader with something to ponder. it's almost like a rhetorical question (but just not a question). it also seems like irony.
Answer:it should be especially memorable
Explanation: if its the last paragraph, it needs to hold all the summarized information and thus be remembered
Present Tense well at least that's what I found on the internet.
Answer:
B. To use a comparison to explain the way a heart functions.
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.