the Earth rotating on its axis causes stars to appear to move across the sky at night
Jeff noticed that the big dipper was in a different spot in the sky at 2am than where it was at 10pm. Why?

Choose your answer from: [I] because of the earth's orbit [II] the stars had rotated [III] Jeff had been instantly transported thousands of miles from where he'd been at 10pm. [IV] the earth had turned
[IV]