Answer:
D. Restoration of monarchies.
Step-by-step explanation:
From the events presented above, it can be concluded that the correct answer is "Restoration of monarchies."
This is because the outcome of the Congress of Vienna was to suppress ensuing national and liberal movements going on as a result of Napoleon's war and revolutionary ideologies.
It is also believed that the Congress of Vienna's goal was to prevent or terminate the republicanism and revolution ideas that continue to threaten the conventional monarchical power and rules in Europe.