The statement about the short story that is most true is "It uses narrative techniques (e.g., plot, characters, setting, and conflict)".
Short stories, as well as novels, resort to different narrative techniques, such as characters, setting and plot, in order to construct what is known as fiction. Other fictional devices that short stories use are flashback and foreshadowing. However, they are much shorter than novels since they can be read in one sitting. Famous short stories are "The Lottery" by Shirley Jackson, "A Sound of Thunder" by Ray Bradbury and "The Nightingale and the Rose" by Oscar Wilde.