Final answer:
Franz Boas is most correctly associated with anthropology and ethnology, but the movement closest to his work's ethic is Romanticism, which glorified nature, common people, exotic locations, and the historical past.
Step-by-step explanation:
Franz Boas is often associated with the academic fields of anthropology and ethnology rather than directly with an artistic movement. However, given the context of the artistic and literary movements, the closest match to the ethos of his work would be Romanticism. This is because Romanticism was a movement that glorified nature, common people, exotic places, and the historical past—elements that resonate with Boas's focus on cultural diversity and the richness of human societies. Nonetheless, it's important to emphasize that Boas's work was primarily scientific rather than artistic, and his main contribution was to the field of anthropology rather than directly participating in an art movement like Romanticism or Realism.