Question

• is abstract with simplified forms of a real horse
• is made of cast bronze
• depicts a gentle mare
• has a calm and still mood

Explanation:

The description mentions an abstract, cast - bronze depiction of a gentle mare with a calm mood. The first image (the upper one) appears to be a sculpture, likely made of a material like bronze (consistent with cast bronze), and has a form that could be an abstracted horse - like figure. The second image looks like a tree or natural structure, not matching the description of a horse - related sculpture. So the correct image is the upper one (the first image with the sculpture).

Answer:

The Upper Graph (the first image with the sculpture - like figure)