To accurately represent Koryo culture, you would want to look for a statement that encompasses its key aspects, including its achievements in art, literature, religion, and technological advancements. A strong option might include reference to the significance of Buddhism, the creation of the world's first movable metal type, or the development of unique forms of pottery, especially celadon wares.
If you provide specific statements, I can help determine which one aligns best with Koryo culture!