Why might a heart surgeon explained to patient that a human heart is like pump?

A. To contrast the workings of a heart with the working of a pump.
B. To As a comparison to explain the way a heart function.
Juxtaposition Analogies

Which theme is best supported by the descriptive detail in this passage from my antonia

What event triggers victors interest in electricity?

Ipronounced his name, offering him at the same time my hand: he took it, smiling and saying, “we shall do very well by-and-by.” then he laid me down, and addressing bessie, charged her to be very careful that i was not disturbed during the night. having given some further directions, and intimates that he should call again the next day, he departed; to my grief: i felt so sheltered and befriended while he sat in the chair near my pillow… (chapter 3) this passage, in which jane first meets the doctor, is an example of