tides eclipses length of year change of seasons
I gave my students this multiple choice question: The axis of Earth is tilted at an angle of 23.5° from the vertical position. Which of the following is the main result of this tilt?

Only one answer is correct among these 4 choices:
- tides
- eclipses
- length of year
- change of seasons

Could you tell me which one is correct?

change of seasons