Here's a problem to solve: Stars are organized into patterns called constellations. One constellation is named Leo. Which statement best explains why Leo appears in different areas of the sky throughout the year?

Among the 4 following options, which is the correct answer?

- A: Earth revolves around the sun.
 
- B: The sun revolves around Earth.
 
- C: The constellations revolve around Earth.
 
- D: Earth revolves around the constellations.
 