B. some narrow, unpaved streets, protective walls, and homes made of mud-bricks. hope this helped :)
B is the correct answer. Sumerian buildings and homes were made of mud-bricks, which uses a mixture of mud, sand, water and straw-like material. They deteriorate after a while, so they were regularly knocked down and rebuilt. The houses therefore got raised above the surrounding land.
The correct characterization of Sumerian cities is option B: some narrow, unpaved streets, protective walls, and homes made of mud-bricks. These cities were designed with narrow pathways for foot traffic, surrounded by thick defensive walls, and constructed primarily from sun-baked mud brick. This building material was well-suited for the climate and available resources of ancient Mesopotamia.
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