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Artists create unity when all parts of an artwork seem to go together to create a whole image, rather than a series of separate elements. Artworks with unity are pleasing to the eye. How did Henri Matisse create unity in his collage painting?

A.He added a green figure in the bottom left corner
B.He added an orange guitar shape in the center of the painting.
C.He repeated the blue color and added a continuous pattern of yellow leaf like shapes throughout the composition