Answer: B) The repetition of “Mr. Gorbachev” creates emphasis and creates a forceful tone.
Step-by-step explanation: When writing or giving a speech, the use of rhetorics is very helpful to make the speech more convincing and powerful. In the given passage from "Remarks on East-West Relations at Brandenburg Gate in West Berlin" by Ronald Reagan, we can see the use of repetition in the phrase " Mr. Gorbachev, open this gate. Mr. Gorbachev—Mr. Gorbachev, tear down this wall! " this creates emphasis and creates a forceful tone.