Answer:
A . The forms are organized inside repeating rectangular boxes.
B. There are many different shapes and textures.
C. The forms are painted a single color .
D. A variety of materials were used to create the forms
Step-by-step explanation:
In art and design, unity refers to the strategies artists use to give a piece of work a sense of cohesion or coherence, and to make the work of art come together as a whole. To achieve unity, artists organize different elements of art (like line, shape, color, form, space, value, texture) in such a way that the complete work has equilibrium.
In the case of the the artwork for this question, the artist uses similar geometrical shapes or forms organized in rectangular boxes, and fills in the whole space with them. There's also unity in the color, as this relief piece maintains the color of the material.