Macbeth is a Shakespearean tragedy. Shakespeare opens scene III of Act II with the witches to show their petty and mischievous nature. They plan to take the sleep away from the sailor by changing the wind direction.
Act I, scene iii of the play starts with the conversation between the three witches that like to interfere with the mortal world and try to control the wind so that the sailor won't be able to come to port.
The writer opens the scene with this irrelevant content to show the devilish and petty nature of the witches and how they mingle and interferes with the lives of human to create chaos.
Learn more about Macbeth here:
https://brainly.com/question/2204768
#SPJ1