Question

the nazis persecuted certain groups, including aryans. the roma. protestants. catholics.

Explanation:

The Nazis considered Aryans as the 'master - race' and did not persecute them. While some individual Catholics and Protestants were targeted in certain circumstances, the Roma (also known as Gypsies) were systematically persecuted by the Nazis as part of their genocidal ideology.

Answer:

the Roma