Respuesta :
The answer is:
C. By appealing to the emotions of the audience.
When he says "Because if we forget, we are guilty, we are accomplices."
He uses this words to get into the emotions of the audience, he knows everyone knows the attrocities comitted in the WWII and the holocaust, he knows the terror and the inhumanity of such event, and what he is trying to do is connect with the audience emotions to leave a strong impression in them so they will become more conscient of the horrors lived in WWII and wont let them happen again.