The correct answer is A. Homework is unnecessary and does not benefit students.
Explanation:
The sentence presented "Homework is silly and dumb and just lousy for kids" imply a negative position towards homework, but besides this the use of words such as "silly", "dumb" and "lousy" are too informal and even rude, which is not acceptable in formal language and therefore inappropriate for professional audience, this means these words need to be replaced by more objective and formal words while still expressing a negative perspective towards homework.
Therefore, the sentence that would change the language of the original sentence for a more professional audience and preserve its meaning is "Homework is unnecessary and does not benefit students" because in this the words "silly" and "dumb" have been changed to the word "unnecessary" and the word "lousy" was replaced by the word "does not benefit" which makes the sentence more formal but does not change the position and point of view of the original sentence.
