Certain languages which are classified as such by ethnologue.com, but are thought by many linguists to be dialects or variants of another language, will autofill when that language is entered.
the quiz is about indo-european languages, which do include armenian, however dfarren didn't include indo-iranian languages cause it took a long time. armenian isn't indo-iranian
Also why are some languages unguessable or lumped in with others?
Those tricky Jews and their languages...