Which characteristic best defines a short story?

A short story is best defined as a brief narrative that typically focuses on a single theme or idea. This concise format allows the writer to explore a specific moment, character, or setting in depth without the complexity of subplots or lengthy character development often found in longer works like novels. The focused nature of a short story creates a concentrated experience for the reader, providing insight into a particular emotional experience or moral lesson in a compact format. This distinct characteristic sets it apart from other forms of literature, such as novels, which may delve into multiple themes and explore various subplots while allowing for extended character arcs. The simplicity and brevity of the short story make it a unique and powerful medium in literature.