Answer:
Bosche is the correct answer.
Explanation:
The Diary of a Young Girl: Anne Frank is a book and also a diary written by a Jew girl named Anne Frank who lived in the Netherlands during World War II. Due to religious reasons, she and her family had to hide during most part of the conflict, until they were found and taken to a concentration camp. In this case, the person who has disappeared is Bosche, so it is the correct answer.
