A. a true story written about a real person by someone
A biography, or simply bio, is a detailed description of a person's life. It involves more than just the basic facts like education, work, relationships, and death; it portrays a person's experience of these life events.
P.S. the answer is NOT C because when you write a story about yourself it's called an autobiography, not a biography
Answer:
Which detail best reveals that Rainsford opposes Zaroff's idea of the ideal prey? - "How extraordinarily droll you are!" he said.
C. tell what the most interesting part of the piece is