Final answer:
The New Objectivity art movement included artists Otto Dix and George Grosz, who contributed to the movement with their realistic and critical art reflecting Weimar Germany's socio-political climate.
Step-by-step explanation:
The New Objectivity art movement, known as Neue Sachlichkeit in German, was a movement that emerged in the 1920s as a response to Expressionism, particularly in Weimar Germany. Key artists associated with this movement were Otto Dix and George Grosz, among others. This movement was characterized by a return to realism and an all-business attitude reflecting the practical engagement with the socio-political realities of the time.