Answer :
A set of stars will appear at a different angle to us at different times of the year because of the Earth's orbit around the sun. As it orbits around the sun, the parallax of the stars change.
Answer:
A. because we change location as Earth orbits the sun
Explanation:
We have to remember that the universe is traveling and expanding and we are all traveling along with it, in this case the stars are expanding and traveling with the universe along with us, but the appearing on a different angle to us on different times of the year is because we orbit the sun, changing the angle at which we see the stars.