Thanksgiving Day in Canada is celebrated on the:

Discover Canada records this in one direct label. The guide writes: Thanksgiving Day Second Monday of October. The date the test wants is therefore the second Monday of October.

Thanksgiving Day is a moveable Monday. Discover Canada commits Thanksgiving Day to the second Monday of October — meaning the date varies year to year (anywhere from October 8 to October 14) but always falls on a Monday. Like Victoria Day and Labour Day, Thanksgiving Day creates a long weekend.

Canada's Thanksgiving is in October. Discover Canada places Thanksgiving Day in October — earlier than the U.S. Thanksgiving (which falls in late November). The Canadian timing reflects an earlier harvest season at higher latitudes — meaning Canada's harvest celebration comes about six weeks before America's. The October timing also fits within the autumn-foliage season in Central Canada and the Maritimes.

Three of Canada's holidays on Mondays anchor long weekends. Discover Canada places Thanksgiving Day among Canada's Monday holidays: Victoria Day (Monday preceding May 25 — late spring), Labour Day (first Monday of September — late summer), and Thanksgiving Day (second Monday of October — autumn harvest). All three create long weekends spaced through the year. The full Canadian holiday calendar runs from New Year's Day (January 1), Sir John A. Macdonald Day (January 11), Good Friday and Easter Monday in spring, Vimy Day (April 9), Victoria Day (Monday preceding May 25 — Sovereign's birthday), Fête nationale Quebec (June 24, Feast of St. John the Baptist), Canada Day (July 1), Labour Day (first Monday of September), Thanksgiving Day (second Monday of October), Remembrance Day (November 11), Sir Wilfrid Laurier Day (November 20), Christmas Day (December 25), and Boxing Day (December 26). So Thanksgiving Day on the second Monday of October sits between Labour Day and Remembrance Day — the autumn-harvest celebration in the Canadian holiday calendar. So when the test asks the date pattern of Thanksgiving Day, the source-precise answer is the second Monday of October.

The question is testing whether new citizens know when Thanksgiving Day is observed in Canada. Discover Canada commits to one timing: the second Monday of October. The right test answer matches that.

The wrong answer choices each substitute a different timing. The first option matches the U.S. Thanksgiving — not Canadian. "First Monday of September" is Labour Day, not Thanksgiving. "Third Monday of October" is later than the second Monday. Only the second-Monday-of-October answer matches the source.