Answer:
Among the options given on the question, the answer is option B
Count di Cavour persuaded Otto Von Bismarck to help Sardinia fight the Austrians.
Explanation: The unification of Italy was created by many historical events. The process started in 1815 with Vienna congress and finally Italy was unified in 1870. Count du Cavour was one of the important character in the unification of Italy, who was the prime minister of Sardinia. He adopted the 'realpolitik' policy which means the policy which is adopted considering the reality. At first he involved Sardinia in the Crimean war on the side of Britain and France. Then as a return of helping on the war France helped Sardinia on a war against Austria. Austria was defeated and that was a important sign to unify Italy movement. In 1866 when Prussia king Bismarck defeated in a war in 1866, Cavour gave a deal to Bismarck to force Vienna to turnover Venetia. On the other hand Prussia defeated France in 1870,the French troops the entire Italy. As a result Sardinian king Emanuel II took over the room and the unification of Italy was accomplished.
