What best describes President John F. Kennedy's main purpose for giving the speech?
"Finally, whether you are citizens of America or citizens of the world, ask of us here the same high standards of strength and sacrifice which we ask of you. With a good conscience our only sure reward, with history the final judge of our deeds, let us go forth to lead the land we love, asking His blessing and His help, but knowing that here on earth God's work must truly be our own."
A. to reflect
B. to inform
C. to entertain
D. to persuade
Please answer quickly!