Which best describes the effect of flooding on the development of civilization in Mesopotamia? (1 point) a
Mesopotamian farmers depended on the regular yearly floods to provide water for their crops to support the population.

b
Mesopotamian people created settlements in regions where flooding did not occur, and civilization grew from there.

c
Mesopotamian farmers managed floodwaters to increase the fertility of the soil and the amount of crops grown for the region's people.

d
Mesopotamian people relied on flooding to decrease the hot temperatures of the desert and make the climate easier to stand

Mesopotamian farmers depended on the regular yearly floods to provide water for their crops to support the population. ... Mesopotamian farmers managed floodwaters to increase the fertility of the soil and the amount of crops grown for the region's people.

so in other words the answer is (A)

Explanation:

this null effect is caused by a weak manipulation and ineffective internal validity. in a scientific study, as the one dr. morimoto is trying to perfom, internal validity refers to the confidence placed in the cause-effect relationship and to how well an experiment is done and able to eliminate confounding variables.        

can you tell me where are the ansawer choices