Answer:
Letter C is the correct answer.
Step-by-step explanation:
Anne Frank Remembered: The Story of the Woman Who Helped to Hide the Frank Family is a book written by Alison Leslie Gold and Miep Gies that talks about Anne Frank, a Jewish girl who had to hide with her family during World War II in Netherlands. Miep Gies was one of the persons who helped them to do so. The passage narrates an episode with a lot of tension and it is solemn; due to this, an informal tone would not be proper; letter B is also incorrect incorrect due to solemnity; since the excerpt doesn't want teach anything, D is incorrect too. A mysterious tone is the correct answer.