Which group is the largest ethnic group in Eastern Europe?

• A. Slavs
• B. Romanians
• C. Poles
• D. Ukrainians

Answer: (A)

The main idea here is that a single language-family group dominates across Eastern Europe. Slavic peoples form a large family of ethnic groups that share linguistic roots and broad cultural similarities. In Eastern Europe, many countries are home to numerous Slavic groups—Russians, Ukrainians, Poles, Czechs, Slovaks, Bulgarians, Serbs, Croats, Bosniaks, Slovenes, Belarusians, and others. When you consider all these groups together, they outnumber any one non-Slavic group in the region.

So, while Romanians, Poles, and Ukrainians are all sizable groups, they are parts of the larger Slavic family. That broader Slavic category represents the most people across Eastern Europe, making it the best answer.