Your topic is courtesy, and you're writing from the point of view of a caring mentor.
Which of the following sentences is most persuasive for an audience of high school graduates from a working-class neighborhood?

A. Courtesy is the oil that lubricates the machinery of discourse.
B. Courtesy to others shows self-respect as much as it shows respect for others. C. Remember that you can catch more flies with honey than with vinegar.
D. Courtesy yields profits to the impecunious as well as to the wealthy