Question

celebrate our students and, of course, eat some rockin' breakfast sandwiches. I know you're crazy busy, but if you find an hour to spare this Saturday, we'd all be super excited. Which revision best maintains an academic style throughout? A. Senator McKee, I am writing to humbly request your presence at our Harper Middle School Honors Brunch, the annual event where we celebrate our students and eat some delicious vittles to boot. I know how busy you are, but if you could find the time to attend, everyone involved would be fired up. B. Senator McKee, I am demanding your presence at our Harper Middle School Honors Brunch, the annual event where we celebrate our students and eat some delicious breakfast foods. Why wouldn't you come? I know how busy you are, but if you could find the time to attend, everyone would dig it. C. Senator McKee, I'm checking in to see if you'd be up for the Harper Middle School Honors Brunch, the annual event where we give props to our students and eat some delicious breakfast foods. I know how busy you are, but if you could find the time to attend, everyone involved would be very grateful. D. Senator McKee, I am writing to humbly request your presence at our Harper Middle School Honors Brunch, the annual event where we celebrate our students and eat some delicious food. I know how busy you are, but if you could find the time to attend, everyone would be grateful.\

Answer 1

The revision that maintains the best academic style throughout (and is most polite) would be answer D. The "academic style" is generally meant to be free of slang and grammatically correct. 

Hope this helps. <span />

Answer 2

The correct answer is D. Senator McKee, I am writing to humbly request your presence at our Harper Middle School Honors Brunch, the annual event where we celebrate our students and eat some delicious food. I know how busy you are, but if you could find the time to attend, everyone would be grateful.

Explanation:

In writing, an academical style refers to a type of writing that is mainly formal and impersonal, this means elements such as contractions, words that express feelings or judgments, slangs or colloquial words are avoided and instead grammar is followed and formal words are included. In the case of the original sentence, the use of language in  "rockin' breakfast sandwiches" "you're crazy busy", "spare" and "we'd all be super excited" are too informal, also they include colloquialism and contractions that are not suitable.

This means, to revise this sentence it is required to replace those words by more formal ones and omit contractions. According to this, the most appropriate revision would be option D. as in this case the term "some delicious food", "how busy you are", "attend" and "everyone would be grateful" have been used to replace the informal section and all of them use formal language, do not include contractions and follow grammar and therefore fit with the academical tone.