Final answer:
Modernist fiction differed from the novels and stories that were popular during the eras of Regionalism and Naturalism by rejecting traditional storytelling techniques.
Step-by-step explanation:
During the eras of Regionalism and Naturalism, the focus of literature was on local color, realism, and accurate detail. Regionalism employed a specific point of view and featured a complex narrative structure with sentimental and nostalgic elements. Realism emphasized ordinary people, their struggles, and their inability to find resolutions, avoiding sentimentality and neatly resolved endings.
In contrast, Modernist fiction rejected traditional storytelling techniques. Modernist writers experimented with form, style, and content, challenging the conventions of storytelling. They created complex narratives, used unconventional narrative structures, and blurred the lines between genres.
Therefore, the correct answer is C. Modernist fiction rejected traditional storytelling techniques.