How Would a Realist Explain the Outbreak of World War

Multiple Choice

How would a realist explain the outbreak of World War I?

A) A realist would argue that the war was inadvertent, not the result of any master plan.
B) A realist would argue that the war was rooted in the failure of the League of Nations.
C) A realist would argue that the war was due to insufficient interdependence in Europe.
D) A realist would argue that Nazi Germany was solely responsible for the war.