Which film could be considered purely expository in form?

The film "March of the Penguins" can be seen as purely expository in form because it emphasizes the presentation of factual information in a straightforward manner. The documentary chronicles the lives and behaviors of emperor penguins during their breeding season in Antarctica. It is structured around a clear narrative that is informative, focusing on the environmental conditions and the penguins’ life cycle. The use of a narrator guides the audience through the stages of the penguins’ journey, providing context and insights without significant narrative conflict or dramatization. This aligns with the characteristics of expository films, which prioritize clarity of communication and education over emotional engagement or artistic interpretation.

The other films mentioned each incorporate elements that go beyond mere exposition. "High School," for instance, presents a more observational documentary style that captures the complexities of school life, while "The Act of Killing" employs creative reenactments to explore themes of violence and memory. Similarly, "Waltz with Bashir" combines documentary and animated storytelling to address the filmmaker's personal experiences and collective trauma, thereby transcending a purely expository format.