Earth has a moon Earth has a tilted axis Earth has a magnetic field Earth has an elliptical orbit
I gave my students this multiple choice question: What is the MAJOR reason Earth has seasons?

Only one answer is correct among these 4 choices:
- Earth has a moon
- Earth has a tilted axis
- Earth has a magnetic field
- Earth has an elliptical orbit

Could you tell me which one is correct?

Earth has a tilted axis