the official ideology of a totalitarian nation is focused on creating and promoting communism. nationalism…

Brief Explanations:

Totalitarian nations often use nationalism to unify the population under a single - minded ideology, suppressing individual freedoms and promoting a strong, centralized state. Communism is an economic and social system aiming for class - less society and is not the defining ideology of totalitarianism. Exploitation is a consequence in some systems but not an official ideology. Diversity is typically suppressed in totalitarian states.

Answer:

B. nationalism