Question

which component that makes up the bulk of all galaxies? (1 point)
dark matter
dust
gas
stars

Explanation:

Dark matter is a significant component in galaxies. It doesn't emit light but its gravitational effects are observed. Galaxies' rotation curves and gravitational lensing studies suggest dark matter makes up a large portion (about 85% of total matter) in galaxies. Dust, gas, and stars are also present but in much smaller quantities compared to dark matter in terms of overall mass contribution to the bulk of galaxies.

Answer:

dark matter