Answer :
Answer:
A. The celestial sphere is a representation of how the entire sky looks as seen from Earth.
Explanation:
The celestial sphere is an imaginary sphere that has an arbitrarily large radius and is concentric to the earth. It is an abstract spherical shell formed by the sky usually represented as an infinite sphere, the center of which is a given observer's position (earth). It's represents how the sky looks from the observer's position (Earth).