The correct answer is C) a meeting of nations to find a balance of power.
The statement that describes the Concert of Europe is a meeting of nations to find a balance of power.
We are referring to a time in Europe after the Napoleonic period. The European nations were in favor of keeping the status quo of the region, establishing a balance of power. This allowed some countries to intervene on the issues of another in the case there was a threat of internal rebellion. Historians consider the Concert of Europe in two periods, the first after the Congress of Viena of 1815 until 1848, an the other form 1871 to 1914.