Which statement best explains how Dadaism related to World War I?

Dadaism opposed WWI.

Explanation:

Dadaist artists questioned cultural values that, in their opinion, had led to WWI. They declared "war on war." It was a transnational artistic movement founded in Zurich, Switzerland.

In 1916, artists rebelled against the establishment and carnage of World War I. Thus arose the movement that celebrated the absurd, through performance, poetry and conceptual art.

The artistic revolution of Dadaism began in neutral Switzerland, the refuge of European artists during the First World War. It was there that the Dadaists met on February 5, 1916 at the Cabaret Voltaire, a nightclub founded in Zurich by singer Emmy Hennings and poet Hugo Ball.