Answer: Option B
Explanation:
Letters were exchanged between the plaintiff and defendant on the subject of the accident.
The active voice should be
The plaintiff and defendant exchanged letters on the subject of the accident.
Passive voice is most of the time used to emphasize/point out the action/verb and the object rather than the subject.
verbal because one doesn't listen to what the other person says
B, because running is a verb and none of the other sentences have verbs, verbs are action words.