Question

which describes the junker class?
liberals who were opposed to king wilhelm i
revolutionaries who called for german unification
conservatives who supported king wilhelm i
political parties under the second reich

Explanation:

The Junkers were Prussian - German conservative landed gentry. They supported King Wilhelm I and played a significant role in the unification of Germany. They were not liberals, revolutionaries, or political parties in the described sense.

Answer:

conservatives who supported King Wilhelm I