What cinematic style did American directors draw upon when creating Film Noir?

American directors drew upon German expressionism when creating Film Noir, which is the correct choice. This cinematic style is characterized by its use of stark lighting contrasts, unusual camera angles, and a focus on psychological narratives—all elements that were prominent in German expressionist films of the 1920s and early 1930s.

German expressionism heavily influenced the visual style of Film Noir, manifesting in the shadowy lighting and dramatic set designs that create a sense of paranoia and disorientation reflective of the moral ambiguity prevalent in the genre. The thematic elements of alienation, existential dread, and the exploration of the darker aspects of human nature found in German expressionist cinema resonated with the narratives of Film Noir.

While Hollywood musical traditions emphasize a more upbeat and colorful aesthetic, Italian neorealism focuses on the everyday struggles of common people with a more documentary style, and British romanticism often highlights idealized love stories or idyllic landscapes. These styles do not align with the dark, cynical themes and visual aesthetics that define Film Noir. Hence, German expressionism is the most significant influence on the creation of this iconic film genre.