The correct answer is climax
The climax in a story is the story's most intense moment which serves as a key turning point. The climax in a plot is usually the culmination or resolution of a certain conflict or situation in the story. There is usually a build up to the climax in a plot. In this passage, Shelby scoring is the plot's climax.
Answer:
Macbeth is concerned about Banquo's children. The witches said Banquo would father kings, and Macbeth would not. Macbeth worries Banquo's children will pose a threat to his rule, so he hires murderers to ambush Banquo and Fleance. Banquo dies but Fleance gets away