Answer:
Banquo is the father of future kings.
Macbeth was afraid if Banquo.
Step-by-step explanation:
Macbeth kills Banquo because he sees Banquo as another threat to the throne. ... Even though Banquo is his close comrade, Macbeth is now on a single-minded mission to protect himself and his position, and he kills Banquo to maintain the throne.