The correct answer is C. November 11, 1918.
The Armistice of 11 November 1918 was the agreement that brought the fighting of World War I to an end. It was signed at 5:12 a.m. in a railway carriage in the Forest of Compiègne, France, between the Allies of World War I and Germany. The armistice ended the fighting on the Western Front, and it took effect at 11:00 a.m. on the same day.
The armistice was signed by Marshal Ferdinand Foch of France, General John Pershing of the United States, and General Erich Ludendorff of Germany. It was ratified by the Allied governments on 13 November 1918, and by the German government on 14 November 1918.
The armistice required Germany to withdraw its troops from all occupied territories, to surrender its heavy weapons, and to release all prisoners of war. It also required Germany to accept the terms of the peace treaty that would be negotiated at the Paris Peace Conference.
The armistice of 11 November 1918 marked the end of World War I. It was a day of great celebration in Allied countries, and it is still commemorated as Armistice Day or Remembrance Day in many countries around the world.
The other options are incorrect because they are not the dates on which the Armistice of 11 November 1918 was signed.