What defines the "rising action" in a plot structure?

The rising action in a plot structure is defined by the series of events that build tension and develop the story leading up to the climax. This segment of the plot is crucial as it introduces various challenges and complications for the characters, raising stakes and creating emotional engagement for the audience. During the rising action, conflicts become more pronounced, and character motivations deepen, which helps to set the stage for the eventual turning point of the story, known as the climax.

In contrast, other elements such as the introduction of characters and settings, or the final resolution of conflicts, do not fit the definition of rising action. These aspects serve different functions within the overall structure of a narrative but do not contribute to the buildup of suspense and conflict that characterize the rising action.