At one of the many historical sites in Iran, the ancient city of Persepolis, archeologists have uncovered clay tablets inscribed in cuneiform, the earliest form of written language.
Based on the sentence, which is the most valid inference?
1. There are likely few cultural treasures to find in an area as ancient as Iran.
O 2. Sites in Iran are not considered important for what they can reveal about early civilizations.
13. Early civilizations in the area of Iran were likely the first literate civilizations.
4. Cuneiform is most likely similar to written languages that exist today in Iran.