Hi! :)
Answer: antithesis
Antithesis is being used by JFK ie by turning the question around of what your country can do for you to what you can do for your country he grabs the interest of the audience by coming up with the opposite meaning.
D because he does consult jehdjdjeksnrhrjrkejejdjrjrjejwjejejrjrjrj
I guess A but I literally just saw a report that says that Kim attended a ceremony marking the completion of a fertilizer plant in Sunchon, in the South Phyongan Province Saturday.