What does "main character" refer to in a story?

The term "main character" in a story refers specifically to the primary protagonist or heroine, which is why selecting that option is accurate. This character is central to the story's plot and development. They often drive the narrative forward, face challenges, and undergo significant personal growth or change throughout the story. The focus of the narrative typically revolves around their experiences, feelings, and choices, making them integral to the storyline.

In contrast, characters in supporting roles, incidental characters, or background figures do not hold the same significance in the narrative arc. Supporting characters complement the main character's journey but are not the focal point of the story. Incidental characters may appear briefly and serve minor functions, while background figures often exist merely to populate the setting without influencing the plot in a significant way. Thus, the primary protagonist or heroine is fundamentally different and essential to the core story, highlighting why this choice is the most fitting answer.