Answer:
Media would be my guess
Explanation:
As form is one of the seven elements of art, form uses the visual tools that an artist uses to compose a piece of art. In addition to form, they also use line, shape, value, color, texture, and space.
I hope this helps!
Post-impressionism is defined as the art movement of independent styles for expressing the feelings of the artists. It was thought to be originated in French during the late nineteenth century. Among the famous post-impressionists are Paul Cezanne and Vincent van Gogh.
The Study of a Woman's Back was created by B. Henri Matisse. He was the painter who drew a lot of sketches and paintings of women's backs because he was fascinated by them.
It cannot be any of the other painters because their styles differed so much: Renoir painted realistic paintings, Duchamp was more of a sculptor, and Seurat used the technique of pointillism, all of the characteristics which are not visible in this painting.