Answer:
I'd say Character vs Self, because the text only provides her thinking to herself. there is nothing leading up to the other options given.
Try using the expository format if not try function function negation paragraphs, but i suggest asking a teacher for the format first, and if any of them are ok.
Margaret, eager yet reserved, waited with fearful-anticipation for the DNA results; soon, she would know the identity of the killer, the madman who'd butchered her daughter.