The correct answer is D. "America is essentially a dream, a dream as yet unfulfilled."
Explanation:
Pathos or the appeal to emotions focus on using emotionally charged language that makes the audience feel moved and accept the ideas of the speaker. The quotation "America is essentially a dream, a dream as yet unfulfilled" is an example of the use of pathos because the use of words such as "essentially a dream" and " as yet unfulfilled" creates strong emotions in the audience such as hope in the future and through these emotions, Dr. King persuades the audience to believe his message.
The first step in preparing your speech is to take a step back and try to look at it from the perspective of an audience member. See how they would perceive your speech - make sure it's understandable from their point of view and go from there.