What is the rising action in A sound of thunder?

In "A Sound of Thunder," the rising action begins when Eckels, a time safari hunter, arrives in the past with his team. However, as they venture deeper into the prehistoric jungle, they encounter unexpected challenges, including a malfunctioning time machine and the presence of a hungry tyrannosaurus rex. The suspense builds as they desperately try to evade the dinosaur and return to their own time, while also grappling with the ethical consequences of their actions. The rising action reaches its climax when Eckels accidentally steps on a butterfly, creating a ripple effect that alters the future. This realization sets the stage for the story's dramatic conclusion and the consequences that Eckels must face.