The revision that corrects the error in the sentence is A. Players must maintain good grades, meet all physical-fitness requirements, and attend practices regularly to play on the varsity team.
Explanation:
The sentence <em>
Players must maintain good grades, meet all physical-fitness requirements, and attend regularly practices to play on the varsity team </em>sounds awkward because the adverb regularly is improperly separated from the verb it is modifying -<em>attend</em>. Therefore, we call it a <u>misplaced modifier</u>. Option A revise the error by placing the adverb <em>regularly </em>right after the verb (also followed by its direct object,) so that the message is clear.