It is a metaphor because the sentence is comparing two different things without using the word "as" or "like".
Answer: The Three Big Questions strategy challenges readers to annotate in the margins by marking passages that answer the questions: "What surprised me?", "What did the author think I already knew?", and "What challenged, changed, or confirmed what I already knew?".
You did not provide the excerpt, however, imagery is using words to create images by describing every aspect of some entity. A metaphor is a type of figurative language that compares one thing to another, such as calling a man a lion because of his bravery. You can use this logic to find the correct answer in your excerpt.
The answer is C. My Aunt Meena, a nurse in a busy hospital, is from California
Appositives need a comma in front of and after the phrase, this is because the phrase interrupts the flow of the actual sentence.
Hope this helped!
~Just a girl in love with Shawn Mendes