Question

sumerians were the first people of mesopotamia to use
the plow.
irrigation.
a spoken language.
a number system based on 100.

Explanation:

To solve this, we analyze each option:

• The Sumerians were among the first in Mesopotamia to use the plow for agriculture.
• Irrigation was used by earlier or other Mesopotamian groups too, not uniquely first by Sumerians.
• Spoken language existed before Sumerians.
• Sumerians used a number system based on 60, not 100.

So the correct option is the one about the plow.

Answer:

A. the plow