The correct response is: "The Mesopotamians used a series of crisscrossing channels."
While both Egyptians and Mesopotamians developed irrigation systems to manage water for agriculture, Mesopotamian irrigation often involved a complex network of canals and channels to redirect river water, particularly from the Tigris and Euphrates rivers, to their fields. In contrast, Egyptian basin irrigation relied on the Nile River's predictable flooding to create basins that would capture and retain water for crops.