Answer:
C. Progress had finally been made in the balance between populations and representation.
Explanation:
The cataracts kept lower Egypt from coming up the Nile to trade. It made trade decline between the two.
As there are no options to choose from, I will simply explain the concept. Language and Thinking are two elements which affect each other in every way, if someone's language has a clear perspective it makes someone's thinking also clear which in turn makes the language clearer. Moreover people at times tend to think in images instead of words, like artists and innovators can develop a specific idea more clearly in images than the words. <span />