The problem that moves the action of the story towards is known as the conflict.
In a short story, the problem that moves the action of the story forward is known as the "conflict." Conflict is a key element in storytelling that creates tension and drives the plot of the story. It can take various forms, such as internal conflict within a character's mind, external conflict between characters, or conflict with the environment or society. The conflict presents a challenge, obstacle, or dilemma that the characters must face and resolve, leading to the development and resolution of the story.
