What do the three witches predict will happen to Macbeth?

a. He will be unable to sleep and waste away until death.

b. He will not be king, but his sons will become kings.

c. He will slay Duncan and become king of Norway.

d. He will become thane of Cawdor and king.

Act 1, Scene 3

First Witch:

All hail, Macbeth! hail to thee, thane of Glamis!

Second Witch:

All hail, Macbeth, hail to thee, thane of Cawdor!

Third Witch:

All hail, Macbeth, thou shalt be king hereafter!

Since MacBeth is the thane of Glamis, the witches next two sentences are predictions.