Why has macbeth's relationship with banquo most likely changed from the beginning of the play to this scene?

a. banquo has betrayed macbeth by becoming king.
b. macbeth is no longer loyal to the royal family.
c. banquo has threatened to reveal that macbeth killed duncan.
d. macbeth has seen that the first of the witches' prophecies came true.

The correct answer is D.

The witches told Macbeth two prophecies: that he would become thane of Cawdor and that, later, he would become the King of Scotland. But they also told Banquo that, even though he would not be King himself, his children would take the crown.

At first, Macbeth doubted the witches, but when he was announced that he had, indeed, been made thane of Cawdor, he believed that the rest of the prophecies would become true as well. This meant that Banquo and his children went from being friends to being a menance for his reign.

the answer is b-$11,337.