A
Simile is using a comparison using like or as
A flashback tells something from the past so the answer would have to be (A) this is because of the use of the word recall. In every other option the verb is present or future tense instead of past tense.
The anwer to your question is C) Includes characters that are involved in a story
I have done this quiz before so I know the answer
Hope I Helped:)