What choice does Anne Frank make as an author that reveals her point of view and purpose

Anne frank makes the narrative about her own feelings growing up in the basement

Explanation:

The narrator and authorial decisions of Anne frank are first and foremost defined by her acknowledgement of the fact that what she is documenting might be more important than it is to her self only.

That she realizes that this documentation of an extraordinary life the Jews had to live in their hiding spaces from the Germans is something that is unique.

Thus she captures everything around her with sincerity she can offer  as an author and tries to create a good picture that is faithful.

i may be wrong but i think your answer is flashback