Final answer:
Postmodern writers blur the lines between fiction and nonfiction by incorporating real-life details into stories with fictional characters, using metafictional techniques, and playing with narrative forms and content to challenge the nature of truth in literature.
Step-by-step explanation:
Postmodern writers often blur the lines between fiction and nonfiction by incorporating elements typically associated with one genre into the other. This can take several forms, and the answer to the question 'In what way do Postmodern writers often blur fiction and nonfiction?' is: A. Stories with fictional characters incorporate details from real life.
Postmodern literature frequently uses techniques such as metafiction and historiographic metafiction, where the writer may use self-referential elements or play with historical narratives to blur boundaries. Another common technique is including detailed, often excessive footnotes that provide additional commentary, as seen in works by David Foster Wallace. Postmodernists might also appropriate various styles, such as the detective story or science fiction, to create new layers of meaning within their narratives.
The merging of genres and playing with narrative form and content challenges readers to question the nature of truth and representation in literature. Hence, while postmodern literature might contain many truthful elements, it ultimately remains a work of fiction due to the authors’ creative liberties.