The correct option is B Resentment against small gains made by Italy as a result of World War I
Resentment against small gains made by Italy as a result of World War I, was the major factor which contributed to rise of Fascism in Italy. Fascism arose in Europe after World War I when many people yearned for national unity and strong leadership. In Italy, Benito Mussolini used his charisma to establish a powerful fascist state. Benito Mussolini coined the term “fascism” in 1919 to describe his political movement.