Which choice best summarizes the passage? A. Monarch butterflies are special because they are the only known butterflies to travel south for the winter. Some travel as fare as 3000 miles to reach their winter home. B. The migration of the North American monarch butterfly is an amazing phenomenon. They use environmental cues to know when it is time to travel south for the winter. They use a combination of air currents and thermals to travel long distances to California or Mexico. C. Monarch butterflies are rare in the fact that they are the only butterflies that are like birds, making a round-trip migration. Monarchs are unable to survive cold winters, and therefore, travel south, some as far as 3000 miles to California or Mexico.