Answer:
The nationality that does not have an irregular form among the options is Canadien.
So, the correct option is C. Canadien.
Step-by-step explanation:
In French, when forming nationalities, most of them follow a regular pattern by adding "-ien" or "-enne" to the country's name. For example, "Belgique" becomes "Belge," "Monaco" becomes "Monegasque," and "Suisse" becomes "Suisse."
However, "Canadien" is an exception. While it does derive from "Canada," it does not follow the standard pattern of adding "-ien" or "-enne" to the country's name. Instead, it is the irregular form used to denote the nationality of someone from Canada. This is why "Canadien" is the correct answer as it does not fit the regular pattern seen with the other nationalities listed.
So, to summarize, "Canadien" is the irregular form for the nationality of someone from Canada in French, while the other nationalities listed follow the standard pattern for forming nationalities in the French language.
Thus, the correct option is C. Canadien.