What key role did the location of the tigris and the euphrates river play on the development of mesopotamia?

a: mesopotamia was settled between the two rivers to take advantage of the natural barrier produced by the arabian desert.

b: mesopotamia was settled between the two rivers to take advantage of the protection provided by the rivers.

c: mesopotamia was settled between the two rivers to take advantage of the fertile soil produced by floods.

d: mesopotamia was settled between the two rivers to take advantage of the drinking water provided by the persian gulf.