Which of the following describes an epistolary novel?

An epistolary novel is distinctly characterized by its narrative structure, which is primarily conveyed through letters, diary entries, emails, or other forms of correspondence. This format allows readers to engage with the characters' thoughts and emotions in a personal way, as they experience the story through the eyes of the characters themselves. Such a structure can create immediacy and intimacy, deepening the reader's connection to the characters and plot. Other options describe different types of novels—one may focus on supernatural themes, another on pastoral life, while the last emphasizes character motivations—but they do not align with the specific structural characteristics that define an epistolary novel. Therefore, the description of a novel told through letters is the most accurate representation of this genre.