Final answer:
Human language is unique due to its complexity, flexibility, and open-endedness compared to animal communication.
Step-by-step explanation:
Language is a unique skill that humans possess compared to other animals. What sets our language skills apart is the complexity and flexibility of our communication system. Unlike animal communication, which is limited and context-specific, human language allows us to combine words and units in infinite ways to create new meanings. This open-endedness is a distinctive quality of human languages, enabling us to convey abstract ideas, coordinate tasks, and pass on important information to future generations.