C. moved parts of the sentence around
The original sentence was revised by moving the parts of the sentence around and replace one "and" with "so". This allows for a better flow between the related ideas by joining the two independent clauses using the conjunction "so". There were no added introductory words or phrases. The overall sentence type did not change. The original sentence was a statement and the revised sentence is a statement. The order of the subject and verb were also not reversed.