Concept:The brawl directly results in Cassio losing his post as Othello’s lieutenant.Explanation:Othello is furious that the drunken fight has disturbed the island and shamed their Christian conduct.He immediately investigates who began the brawl and holds the responsible officer accountable.Because Cassio is the officer caught fighting, Othello punishes him by removing him from his rank.Thus, the most important outcome of this disturbance is the dismissal of Cassio from office.Answer:C. Cassio is dismissed.