The answer is number 4) a literary critic's analysis, because it is not written by a student and it is a reliable source compared to a blog, website, or student paper.
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 .
It would be C hope that help
