(A) ** The Great War
(B) The Terrible War
(C) The Crimean War
(D) The Battle for the Dardanelles
EXPLANATIONS BELOW
Concept note-1: -World War I, also called First World War or Great War, an international conflict that in 1914–18 embroiled most of the nations of Europe along with Russia, the United States, the Middle East, and other regions.
Concept note-2: -World War I was known as the Great War, or the World War, until World War II broke out.
Concept note-3: -’Great War’ was the most commonly used name for the First World War at the time, although ‘European War’ was also sometimes used. As the first pan-European War since Napoleon, ‘Great’ simply indicated the enormous scale of the conflict, much as we might today talk of a ‘great storm’ or a ‘great flood’.