Which part of the story builds tension leading up to the climax?

The rising action is the part of the story that builds tension leading up to the climax. During this stage, the narrative introduces conflicts and challenges faced by the characters, developing the story's main themes and character arcs. As the events unfold, the stakes become higher, and the reader's emotional investment increases, creating anticipation for the impending climax. This gradual buildup is essential, as it not only engages the reader but also prepares them for the pivotal moment in the narrative where the main conflict reaches its peak.

The other parts of the story serve different roles: exposition sets the scene and introduces characters, the falling action deals with the aftermath of the climax, and resolution wraps up the story’s plotlines. Each has its purpose, but it is the rising action that is crucial for amplifying tension and driving the narrative forward towards its climax.