Answer:
Option C, Otto Von Bismarck, is the right answer.
Step-by-step explanation:
The League of the Three Emperors which was was an alliance between the empires of Germany, Russia and Austro-Hungary, was founded by Otto Von Bismarck. The main goal for forming this league was to establish peace and the balance of power in Europe. German Chancellor Bismarck feared that an antagonistic union of Austria, France, and Russia could distract Germany and to save Germany from this, he had to keep two of the three in his side. Therefore, he formed the League of the Three Emperors in the year 1873.