I feel like agree with (B) much more because in the question it states that the quote has to show the "cultural complexity" of the genre meaning that its not as static as it was before as mentioned in question A. , but how it evolved over-time thus becoming more complex : branching out into different ideas of race and class .
B: a former slave. because of frederick being a slave in the 1800’s he isn’t ancient. C doesn’t make sense. therefor B is the answer
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