What is a key characteristic of authoritarian governments?

The correct answer is D. Power is held by one person or a small group.

In authoritarian governments, political power is concentrated in the hands of a single leader or a small group of individuals. These leaders often exercise significant control over many aspects of life and limit individual freedoms, contrasting with democratic systems where power is more widely distributed and leaders are chosen through free elections. If you have any more questions, feel free to ask!