Answer:
The best answer to the question: In the conclusion, the reminder that Wiesel is a Holocaust survivor helps to reestablish:___, would be, B: Ethos.
Step-by-step explanation:
Ethos, which is also known as an appeal to ethics, is a way by which, in this case an author, or writer, may convince and persuade his/her audience about the validity of the information, statements, or arguments, he/she is delivering based on experience, which provides him/her with sufficient knowledge and authority to make an argument, a statement, or a claim. In this case, the fact that Elie Wiesel, the author of "Night", which was published in 1956, and which is an autobiography, reminds his audience that he was a Holocaust survivor lends credit to his statements and to his arguments regarding the horrors that he narrates in his story. It shows the audience that what is expressed on the book comes from personal experience, from first-hand knowledge, and therefore it is reliable and credible information.