Final answer:
Max Beckmann used the technique of drypoint for his Adam and Eve work to reflect the style of the Neue Sachlichkeit group, a movement known for its clear-eyed and sometimes cynical depiction of reality.
Step-by-step explanation:
Max Beckmann exploited the irregular character of drypoint in his version of Adam and Eve because it fit the style of the Neue Sachlichkeit group, also known as New Objectivity, with which he was affiliated. This movement, primarily active in Germany during the 1920s, focused on a realistic and sometimes sardonic portrayal of the world, contrasting with the more idealized or romanticized subject matter found in earlier and contemporary art movements. Beckmann is often associated with the broader term of Expressionism, however, he considered himself a verist within the Neue Sachlichkeit, an assertion that aligns with the movement's focus on unvarnished reality and direct observation.