From 1914 to 1920, Ottawa interned over 8,000 'enemy aliens' in 24 labour camps. These were mainly:

Discover Canada records this in one direct sentence about the wartime internment policy. The guide writes: Regrettably, from 1914 to 1920, Ottawa interned over 8,000 former Austro-Hungarian subjects, mainly Ukrainian men, as "enemy aliens" in 24 labour camps across Canada, even though Britain advised against the policy. The group the test wants is therefore Ukrainian men.

Five precise commitments. Discover Canada commits the internment policy to FIVE specific facts: (1) the period was 1914 to 1920; (2) the federal government (Ottawa) was responsible; (3) the number was over 8,000; (4) the internees were former Austro-Hungarian subjects, mainly Ukrainian men; (5) they were held in 24 labour camps across Canada. So all the test's named facts are confirmed by the source, with the addition of the named former-empire link (Austro-Hungarian).

The source frames the policy as regrettable. Discover Canada commits the moral framing to one direct word: "Regrettably." So the source itself acknowledges that the internment was wrong. The guide also notes that "Britain advised against the policy" — meaning Canada acted on this internment policy despite explicit British advice not to do so. The combination of "regrettably" and the named fact that Britain advised against the policy makes this passage one of the most direct moral acknowledgements in Discover Canada.

The internment fits the wider First World War context. Discover Canada commits Canada's wartime sequence to specific paired events. Just before the internment passage, the guide records that "More than 600,000 Canadians served in the war, most of them volunteers, out of a total population of eight million." So while hundreds of thousands of Canadians fought overseas, Ottawa simultaneously interned thousands of fellow residents — mainly Ukrainian men — as enemy aliens at home. The Austro-Hungarian connection is significant: many Ukrainian-Canadian immigrants had come from territories under Austro-Hungarian rule, the side that fought against Britain and Canada in World War I, even though those individual immigrants had themselves no political loyalty to the Austro-Hungarian government. The internment policy thus targeted a community by national origin rather than by individual conduct or loyalty. So when the test asks who the over 8,000 "enemy aliens" were, the source-precise answer is mainly Ukrainian men — interned in 24 labour camps across Canada from 1914 to 1920.

The question is testing whether new citizens know the main group interned by Ottawa as "enemy aliens" during the First World War. Discover Canada commits to one named group: Ukrainian men. The right test answer matches that.

The wrong answer choices each substitute a different ethnic group. The first choice is not the source's named main group; the source ties the internment to former Austro-Hungarian subjects — Ukrainian men. The third choice describes a different wartime group — Japanese-Canadians were forcibly relocated during the SECOND World War, not interned in this 1914–1920 program. The fourth choice is also not named in the source for this internment. Only Ukrainian men — the source's exact named group — matches.