What do we call a story that can be either fiction or nonfiction?

A story that can be classified as either fiction or nonfiction is termed a "narrative." This term encompasses any spoken or written account of connected events, whether they come from the imagination (fiction) or are based on real-life occurrences (nonfiction). Narratives are fundamental to storytelling and allow for a diverse range of experiences and interpretations.

In contrast, the other options refer to specific types of writing that do not encompass both fiction and nonfiction in a broad sense. Technical writing focuses on conveying specific information, often related to fields like science or technology, while expository writing aims to explain or inform about a specific topic without requiring an imaginative story framework. Contrasting is not a type of narrative but rather a technique that may be used within different writing styles to highlight differences. Thus, "narrative" is the most appropriate answer as it captures the essence of storytelling across both genres.