The correct answer is B) the achievement of recurring crop surpluses sufficient to release enough workers day-to-day farming.
The factor that was most responsible for the development of civilization in Mesopotamia was the achievement of recurring crop surpluses sufficient to release enough workers day-to-day farming.
The great Sumerian civilization or Mesopotamia settled in the middle of the Euphrates and Tigris Rivers. With the flooding of the rivers, the land became very fertile and Sumerians could grow crops. Let's remember that during the Neolithic Revolution or Agriculture Revolution, humans learned agriculture techniques and started to domesticate animals. That was what people from Mesopotamia did to develop its civilization.
The other options of the question were A) advances in math and science. C) the introduction of writing. D) vast improvements in stone carving.