The correct answer is A. Communicate using written language
Explanation:
The Summer civilization was one of the first civilizations in the world that developed in the Middle East from 4500 BC to 1900BC. This civilization was mainly known due to the development of agriculture and a written system called cuneiform or cuneiform script that is considered as one fo the first writing systems and was created using clay tablets and reeds to write over them. This system allowed the Sumer civilization to use written language for different purposes such as communicating with others, recording important events and even creating literary works. According to this, the Cuneiform allowed the Sumer civilization to communicate using written language.
