Describe the artistic style of Mesopotamian artists by the third century BCE. This is what it is asking                 

By the third century BCE, a distinct artistic style had already been established to define the Middle East and its people. Like most ancient art, it was religious in nature. Mesopotamian artists attempted to depict the relationship between the earthly and the heavenly. Most early Sumerian art was in the form of sculpture and found in the temple sphere. Votive statues have been found in ancient Sumerian temples that are believed to represent worshippers. These statues show people who are highly individual, with distinct hairstyles and clothing and of different shapes and sizes. However, all of them have widely open eyes, as if they are constantly alert.

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the answer to your question is d. any light source appearing in a scene

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