Answer: C, tell the audience what you have told them
Explanation:
The purpose of the conclusion is to summarize your main points and to prepare the audience for the end of your speech. ... It is especially important to remember that the conclusion of your speech is not the time to introduce new points or new supporting evidence; doing so will only confuse the audience.
I would say
Slightly agreed
"Two mountain ranges, the Alps and the Apennines, helped to protect Rome from invasion." I researched it and found this on a reputable source. Therefore, it would be B.
