Writing can be thought of as a form of communication.
Based on the given passage above, the value that the ancient Greek culture value is knowledge. The correct answer would be the second option. Based on the passage, it is mentioned that "he taught himself speech, and wind-swift thought" and also he is training himself for a life that would involve interacting with others. So the best choice would be "knowledge".
C. to emphasize that reconciling with Great Britain is misguided and will cause greater suffering for the colonists