Answer:
The sentence that best demonstrates the use of an emotional appeal in the adapted excerpt from John F. Kennedy's "inaugural Address" is: "Let the word go forth from this time and place, to friend and foe alike, that the torch has been passed to a new generation of Americans." This sentence is emotional because it conveys a sense of responsibility, urgency, and pride in the audience, calling on them to take up the torch of freedom and carry it forward into a new era.