Respuesta :
The halo of galaxy expand from the bulge out to the edge of the disk. The correct option is b.
What is universe?
Universe is the whole cosmic system of matter and energy. The Earth, the Sun, the Moon, the planets, the stars along with the ,dust , gases, rocks forms the universe.
It went on expanding and stretched to grow as large as possible. It is still now expanding.
The universe consist of fully dark matter, interstellar gases or dust. The This universe began with a big bang , also known as the massive explosion. This universe is still on it way of expanding more.
The formation of stellar halos occurs naturally in a cold dark matter. Universe has halos which occurs from the bottom-up or the large structure of galaxies is formed starting with small objects.
Thus, the correct option is b.
Learn more about universe.
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