Macbeth murders Duncan and becomes the king of Scotland. However, he is insecure in his position as he remembers the witches' prophecy that BanquoÍs descendants will be kings. His ambition makes him plot other killings, but his plans start going awry. Which event is the turning point in Macbeth?

the murder of Duncan

the murder of Banquo

the murder of the guards

the murder of MacduffÍs family