Why was targeting communists after the Reichstag Fire useful for Nazis?

It weakened their major political opponent

The Reichstag Fire gave the Nazis an opportunity to present communists as a danger to Germany, whether or not the accusation was justified. By using the emergency as a reason for arrests and restrictions, the Nazi government weakened the Communist Party and reduced an important source of opposition. This helped create fear and made it easier to suppress democratic debate and organise one-party control.

Option A is correct because targeting communists served the political purpose of weakening a major rival. The action did not give power to communists; it took power away from them. It did not make parliament free, and it did not stop Nazi propaganda. Instead, repression and propaganda worked together: repression removed opponents while propaganda portrayed the Nazis as protectors of the nation. Thus, A best explains the usefulness of this policy to the Nazis.

This is a Class 9 History question. Chapter: Nazism and the Rise of Hitler. Topic: Hitler’s Rise to Power.