Answer:
c. the location of Earth in its orbit.
Step-by-step explanation:
It is known that the earth orbits the sun once every 365 days, during this time the constellations that are visible in the sky are changing.
This is due to the fact that depending on the position, we have access to different parts of the celestial tomb, that is, the stars and constellations visible from earth.
This is why Orion is visible in winter but not in summer, since in summer it is in a different part of the orbit and with visibility towards different constellations.
the answer is c. the location of Earth in its orbit.