What were the operational dates for World War I?

The operational dates for World War I are correctly identified as April 6, 1917, to November 11, 1918. This time frame marks the period during which the United States officially entered the conflict and continued until the signing of the Armistice, effectively ending the fighting.

April 6, 1917, is significant as it is the date the United States declared war on Germany, formally entering a conflict that had begun in Europe in 1914. The Armistice signed on November 11, 1918, at 11 a.m. brought an end to the hostilities, making it a pivotal moment in history and marking a significant outcome of the war.

The other choices represent entirely different events or conflicts. For instance, the dates in the other options relate to events such as the Berlin Airlift, Operation Desert Shield, and various military engagements unrelated to World War I, demonstrating a clear distinction in historical context.