Which of the following was not something that the leaders of europe did at the congress of vienna to restore europe to its pre-french revolution status?

a. they restored rightful rulers back to their positions of power.
b. they established the balance of power.
c. they took land that france had conquered.
d. they divided up france among themselves.

The objective of the Congress was-
 >> To provide a long-term peace plan for Europe by settling critical issues arising from the French Revolutionary Wars and the Napoleonic Wars.
 >>The goal was not simply to restore old boundaries but to resize the main powers so they could balance each other off and remain at peace.

so, all option except A) is correct..

so, answer will be A) 

hope it helped  :-)