Final answer:
The climax is the point in the narrative where the main conflict reaches its peak, often leading to a decisive turn in the story.
Step-by-step explanation:
The climax of a story is the moment when the tension peaks and the central conflict comes to a head, ultimately leading to a resolution. In the excerpts provided, these moments occur when the narrator calls out for Ben to reverse the boat, revealing the ultimate struggle in their year of suffering; when Grandison returns, showcasing the colonel's plans and their outcome; and the dramatic high point in Romeo and Juliet where Romeo finds Juliet seemingly dead. Each of these examples describes a turning point where characters confront the greatest challenge or make decisive actions, determining the direction for the rest of the narrative.