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 .
I would go with Option C, <span>It has a negative connotation, suggesting that Angela’s brother is silly or lacks sophistication.</span>
The chiefs of staff are meeting tomorrow at the White House
A)Please review our suggestion for paving over the muddy area where students wait before school.
Option A has the correct revision for a formal email. It states the topic without using any informal tone or voice. Option B is informal because of the introductory phrase "you now" and the vagueness of the observation "it's gross." Option C is informal due to the words "awesome" and "gross". Option D is informal because of the use of the word "obviously" and "smart".