To create an image that is not harmonious an artist could

A. Change the proportions of the facial features so they no longer worked together
B. Use a shading technique that would cause the highlights and shadows to blend seamlessly
C. Change all organic shapes to geometric shapes to create a cubist portrait
D. Use patterns of color in the background to emphasize light showing through the leaves

C. Change all organic shapes to geometric shapes to create a cubist portrait

To create an image that is not harmonious, an artist could:

C. Change all organic shapes to geometric shapes to create a cubist portrait. Cubism is a style of art that focuses on breaking down objects and forms into geometric shapes, which can create a jarring and dissonant effect.

A. Change the proportions of the facial features so they no longer work together. By altering the traditional proportions of facial features, an artist can create a sense of unease and disharmony.

D. Use patterns of color in the background to emphasize light showing through the leaves. By incorporating patterns of color in the background that contrast with the subject matter, an artist can create a dissonance between the main focus of the image and its surrounding elements.

B. Use a shading technique that would cause the highlights and shadows to blend seamlessly. While this technique may enhance the visual appeal and realism of an image, it is not typically associated with creating disharmony.

To determine the correct answer, we need to understand what it means for an image to be "harmonious." In art and design, harmonious compositions are visually pleasing, balanced, and cohesive. They often make use of elements such as symmetry, repetition, and complementary colors to create a sense of unity.

Now let's analyze each of the given options and identify which one would create an image that is not harmonious:

A. Changing the proportions of the facial features so they no longer work together: This option would likely disrupt the balance and coherence of the image, making it less harmonious.

B. Using a shading technique that blends highlights and shadows seamlessly: This option does not seem to contradict the idea of harmony. In fact, it could even contribute to a more realistic or refined appearance.

C. Changing all organic shapes to geometric shapes to create a cubist portrait: This option involves intentionally altering the natural shapes and forms, which may create a deliberate juxtaposition. While this could result in an interesting and thought-provoking composition, from a typical perspective of harmony, it could be perceived as less harmonious.

D. Using patterns of color in the background to emphasize light showing through the leaves: This option seems to suggest adding visual interest and depth to the image, but it does not inherently go against the concept of harmony. In fact, it could contribute to a balanced and visually appealing composition if executed properly.

Based on the analysis, option C (changing all organic shapes to geometric shapes to create a cubist portrait) is most likely the correct answer, as it involves intentionally creating a composition that deviates from traditional notions of harmony.