Final answer:
Dadaism was the art movement that started as a form of protest over the horrors of World War I.
Step-by-step explanation:
The art movement that was started as a form of protest over the horrors of World War I is Dadaism. Dadaism originated in Zurich, Switzerland, during the early 20th century and aimed to challenge traditional artistic conventions and express the absurdity and chaos of the war. Artists associated with Dadaism, such as Marcel Duchamp and Hannah Höch, used unconventional materials and techniques to create provocative and anti-establishment artworks.
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