The correct option is C Mesopotamian Civilisation
Cuneiform script or system of writing was developed by Sumerians (Mesopotamian civilization) to convey their language. It is one of the oldest script in world developed around 3000-3500 BC. It is a system of pictograms (i.e use of pictures instead of words) wedged upon clay tablets by use of grass or wooden blocks. This script has been deciphered i.e. is understood by historians which made us understand about the life and society of Mesopotamian civilization.