Final answer:
The witches in Macbeth prophesy that Macbeth shall be Thane of Cawdor and king, and that Banquo's descendants will be kings, but do not prophesy Malcolm following his father as king. Option 4.
Step-by-step explanation:
The question regards the prophecies made by the three witches in William Shakespeare's play Macbeth. Among the prophecies given to Macbeth and Banquo, the one that is not predicted by the witches is that Malcolm shall follow his father as king.
The prophecies actually made by the witches include that Macbeth shall become the Thane of Cawdor, subsequently the king of Scotland, and that although Banquo himself will not be king, his lineage will include kings, stated in the prophecy as 'Thou shalt get kings, though thou be none'.
Therefore, statement 4, concerning Malcolm, is the prophecy not foretold by the witches in the excerpts provided.