If spring, summer, autumn, and winter are caused by the Earth being tilted on its rotating axis, then what causes spring, summer, autumn, and winter?

Answer choices:
- meteor showers
 - heat production
 - the sun's energy
 - Generating heat
 - Earth tilted on rotating axis
 - Something with a head, thorax, and abdomen
 - Earth vibrating
 - lunar cycle

 

     Earth tilted on rotating axis     