Observe the pictures of a pattern of stars at 8:00 p. m. and again at 6:00 a. m. Why do the patterns of stars appear to move in the sky? a pattern of stars in the bottom left hand corner of the sky

a pattern of stars in the upper left corner of the sky

It is caused by the rotation of Earth.
It is caused by the stars moving closer to Earth.
It is caused by the stars moving at night.
It is caused by the sun rotating around Earth.