Which pair of terms best describes the female character as depicted in the excerpt?
flat character, protagonist
round character, antagonist
flat character, antagonist
round character, protagonist

We don't have the excerpt, so we cannot really answer your question.
I can help you a bit, however, so if you've read the story, you will know how to answer it yourself.
A flat character is the one who doesn't change at all over the course of a novel, whereas a round character develops and changes his or her characteristics.
A protagonist is the hero of a novel, whereas an antagonist is his "enemy."

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