While I have never read the book (because it is historically inaccurate - so don't get too sad, because it never could have happened), there are many words that would signal a flashback. Flashbacks are a time of reflection, so there are many past tense verbs used. You may also see things like, "Back in my day...", "As I think back...", "When I was a young boy...", "As I remember...".
The answer is:
C) to foreshadow tragedy
The writers usually writte about past actions and situations that the characters live are useful to give an idea of the way life treats our characters and how their fortune is set, in this way talking about past tragedies can foreshadow tragedy in the future.
Millicent did not want to conform to the way of the heather birds, she wanted to stay true to herself and not be like the sorority girls. So, as you see this conflict changes Millicent's way of thinking, yes there for she revolts and decides it is time to speak her mind and let the sorority girls know exactly what she is thinkin.
Because the doctor feels the woman Is more important
“By donating just a dollar a day, you could help millions of shelter animals in need.” Is one example.