"Macbeth" is actually a play that was written by William Shakespeare and based on this play in act I, Scene II, Ross referred Macbeth as "Bellona's bridegroom" and we know that Bellona is a Roman goddess of War. The use of allusion here affected the play in a way that it helps reveals Macbeth's brutality in the battle, which is, therefore, shows her character traits. The answer is the third option.