How does Macbeth's ordering the murder of Banquo in Act III help develop one of the play's major themes?

Question 4 options:

It shows that the predictions of supernatural beings cannot be trusted.

It shows that decent men are also naïve men who can never hope to defeat tyrants.

It shows that anyone who supports tyranny will ultimately be punished.

It shows that unchecked ambition can lead a person to ignore any sense of loyalty, friendship, or honor.

The possible answer to this question is: "It shows that unchecked ambition can lead a person to ignore any sense of loyalty, friendship, or honor."