Multi-select: Knowing that "the Earth rotates on its axis on its axis", how would one answer "What is an example of the Earth rotating on its axis?"

OPTIONS:
+ constellations are only visible in some parts of the world during certain months;
+ cloud coverage varies depending on the season;
+ it is always cold in Antarctica;
+ the equator moves up and down around the Earth;...A:
constellations are only visible in some parts of the world during certain months