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.
The banker had negative feelings towards the jurist. In the story, the jurist did him some not so good things. We would expect that the wager was done out of hatred for the jurist. The banker wanted to take revenge aginst the jurist.
