Final answer:
Novels in the nouveau roman style primarily utilized third-person omniscient narration, lending an all-knowing perspective to the narrative that allowed for an in-depth exploration of characters' inner worlds and circumstances.
Step-by-step explanation:
Novels in the nouveau roman style, which emerged in the mid-20th century, were characterized mainly by the use of a third-person omniscient narrative mode. This narrative technique entails a narration style provided by an all-knowing author or narrator, who is not part of the story's world and thus avoids using first-person pronouns such as "I," "you," or "we." Instead, this narrator has access to all characters' thoughts and actions, backgrounds and futures, and provides a more detached view on the unfolding events.
Unlike its predecessor styles, such as realism and naturalism, which offered more limited perspectives, the nouveau roman style allowed authors to explore the inner worlds and external circumstances of characters in great depth. Prominent novelists utilizing the third-person omniscient viewpoint have crafted stories with rich, multi-faceted perspectives that delve into complex character motivations and narratives.