How does malcolm's army make the witches' prophecy come true?

The correct answer is B) the army breaks off branches from the trees in Birnam wood and carries the branches with them as they march on McBeth's castle.

Malcolm's army makes the witches' prophecy come true in that the army breaks off branches from the trees in Birnam wood and carries the branches with them as they march on McBeth's castle.

We are talking about a moment in the story "The Tragedy of McBeth," a play written by English writer William Shakespeare in 1606. McBeth, a General from Scotland, listens to a prophecy in which three witches tell him that some day he will be the king of Scotland. That makes hin an ambitious and terrible man.

The other options of the question were A) the army searches Scotland and finds a man that was not born of a woman's body so that Malcolm can defeat McBeth. C) the army sets fire to Birman wood and burns into the ground, leaving McBeth's castle unprotected. D) the army finds Banquo's son and has him march in front of the army so McBeth can see the future king.  

they killed other men

explanation: