The correct answer is A. Stars are not studied by physical geographers, but by astronomers.
Explanation:
Astronomy is the science of the stars. Using scientific means, it explores the positions, movements and properties of the objects in the universe: planets, moons, asteroids, stars including the sun, star clusters, galaxies and galaxy clusters; interstellar matter and the radiation that occurs in space. In addition, it strives for an understanding of the universe as a whole, its creation and structure.
