Final answer:
The witches in Macbeth plant the seeds of ambition and power by predicting Macbeth's future as the King of Scotland.
Step-by-step explanation:
The witches in Macbeth are planting the seeds of ambition and power when they predict his future. They tell Macbeth that he will become the King of Scotland, which awakens his desire for power and sets in motion his pursuit of the throne. Without the witches' prophecy, Macbeth may not have been motivated to pursue the course of action he did.
Learn more about The influence of witches' prophecy on Macbeth's motivation