Respuesta :
I would say that "you only have to look at" should be changed for "one only has to remember" to make the speech more formal. Substituting "one" for "you" makes the tone more objective and less familiar. The author is trying to sway our public opinion so to get us on his side and see his point of view it is best to be objective in tone. ...
We can actually deduce here that the change that is the best revision to reflect a formal tone for the speech’s audience is: B. Change “you only have to look at” to “one only has to remember.”
What is formal tone?
A formal tone actually refers to the tone that uses an official and serious language which doesn't show any sign of familiarity or intimacy.
We see that revision is carried out in order to improve something. So, it will be best to change “you only have to look at” to “one only has to remember" in order to make it reflect a formal tone.
Learn more about formal tone on https://brainly.com/question/15123121
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