Which language is NOT Indo-European?

The story behind the answer

Hungarian is the only option that isn’t Indo-European; it belongs to the Uralic family (Finno-Ugric branch), making it a distant cousin of Finnish and Estonian. By contrast, Greek (Hellenic), Russian (Slavic), and Latvian (Baltic) are all Indo-European. Hungarian stands out with agglutinative grammar and vowel harmony, building meaning through strings of suffixes rather