Which artist is known for creating works with a dark palette and visible brushwork?

Members of the Ashcan School are recognized for their distinctive approach to art, which often includes a dark, realist palette, and visible brushwork. This movement, which emerged in the early 20th century in New York City, focused on depicting everyday life in urban settings, particularly the gritty aspects of city life. Artists associated with the Ashcan School, such as Robert Henri, George Luks, and John Sloan, used loose brushstrokes and a limited, sometimes somber color palette to convey a sense of immediacy and emotional depth in their works.

In contrast, the other artists mentioned each have their unique styles that do not align with the characteristics of the Ashcan School. For instance, Pablo Picasso is known for his innovative contributions to Cubism and other movements, while Andy Warhol is famous for his role in the Pop Art movement, which celebrated bright colors and mass media rather than a dark palette. Jackson Pollock is recognized for his abstract expressionism and drip painting technique, moving away from representational subject matter and typical color palettes of the Ashcan artists. Therefore, the Ashcan School artists' focus on darker tones and dynamic brushwork clearly distinguishes them within the context of this question.