Which best describes a literary device?

A literary device encompasses various techniques used by authors to enhance their writing and effectively convey messages to the reader. These methods can include imagery, symbolism, metaphor, simile, personification, and many others. By employing these devices, authors can create deeper meanings, evoke emotions, establish tone, and connect themes within a narrative. This explanation aligns well with the idea that literary devices serve a specific purpose in the realm of literature, enhancing storytelling and engaging the reader through crafted expressions and thoughtful language.

Other choices, while related to writing and literature, do not capture the broader and more functional role of literary devices. Personal opinions are subjective, narrative structure focuses on plot organization rather than stylistic techniques, and unique writing styles refer more to an author's individual expression rather than the intentional tools employed for conveying ideas.