which practice is sometimes characterized by extreme nationalism?\n○ spiritualism\n○ communism\n○ fascism\n○…

Brief Explanations:

Spiritualism focuses on spiritual matters and communication with the dead, not nationalism. Communism centers on class struggle and collective ownership, not extreme nationalism as a core trait. Liberalism emphasizes individual rights and freedoms, not nationalist extremism. Fascism, however, is a political ideology that often features extreme nationalism, authoritarian rule, and the glorification of the nation-state as a central tenet.

Answer:

C. fascism