At the end of the Second World War, Canada had which distinction?

Discover Canada records this distinction in one direct sentence. The guide writes: The Royal Canadian Navy (RCN) saw its finest hour in the Battle of the Atlantic, protecting convoys of merchant ships against German submarines. Canada's Merchant Navy helped to feed, clothe and resupply Britain. At the end of the Second World War, Canada had the third-largest navy in the world. The distinction the test wants is therefore the third-largest navy in the world.

The naval growth was driven by the war at sea. Discover Canada describes the Battle of the Atlantic as the moment when the Royal Canadian Navy proved itself: protecting Allied merchant convoys against German submarines crossing the North Atlantic. Without those convoys, "Canada's Merchant Navy helped to feed, clothe and resupply Britain." The wartime navy that emerged from those years was the third-largest in the world by the end of the war.

The third-largest navy fits inside the larger Canadian war effort that Discover Canada describes. "More than one million Canadians and Newfoundlanders... served in the Second World War, out of a population of 11.5 million." The country's army, "liberated the Netherlands in 1944–45 and helped force the German surrender of May 8, 1945." So the navy's distinction was matched by an army that had captured Juno Beach on D-Day, with one in ten Allied soldiers Canadian.

The naval distinction also signalled how much Canada had changed. The country that ended the war with the third-largest navy in the world was the same country that, in Discover Canada's words, had spent the 1930s in the Great Depression and the "Dirty Thirties." The wartime mobilisation transformed both economy and military.

The question is testing whether new citizens have noticed one of Discover Canada's most striking statistics. The guide commits to a precise wording: "At the end of the Second World War, Canada had the third-largest navy in the world." The right answer matches that exact phrase.

The other answer choices each invent a distinction Discover Canada does not give. The guide does not claim Canada had the largest air force, the second-largest army, or the fourth-largest tank force at war's end — only the third-largest navy.