Answer:
The answer is A. The way heat energy reflects off of Earth because of the angle at which it hits.
Step-by-step explanation:
The Earth has an axial tilt that causes different areas of the Earth to point toward the sun at different areas along its orbit. As one area point towards the sun, more heat energy reflects off the surface causing warmer seasons, while the other area points away and reflects less heat energy off the surface, causing colder seasons.