Which characteristic is commonly found in Sumerian art sculptures?

The characteristic commonly found in Sumerian art sculptures is the presence of large oversized eyes. This stylistic choice serves a significant purpose in Sumerian sculpture, symbolizing the spiritual gaze of the figures, which conveys a sense of alertness or divine watchfulness. The exaggerated size of the eyes draws attention and emphasizes the importance of the figures within their cultural context, reflecting both an aesthetic choice and a spiritual or religious narrative intended to convey the connection between the divine and the human.

The other options do not accurately represent the defining features of Sumerian sculptures. While naturalistic representation and minimalist design are common in different artistic traditions, Sumerian art tends to focus on idealized forms rather than strict naturalism. Exaggerated body proportions can be seen in some cultures, but they are not a defining characteristic of Sumerian art as much as the specific emphasis on the eyes is. This unique aspect of Sumerian sculptures is key to understanding their artistic and cultural significance.