In the morning, Rafael notices that the Sun appears on one side of the sky. In the evening, he notices that the Sun appears to be on the other side of the sky. However, in class, Rafael learned that the Sun does not actually move across the sky from one side to another. Why does it appear that the Sun starts the day on one side of the sky and ends the day on the other? A. The Earth spins. B. The Sun is not real. C. The Sun spins. D. The Earth has two Suns.