Question

stars and constellations quick check
what makes up all stars? (1 point)
plasma
hydrogen gas
steam
heavy elements

Explanation:

Stars are made up of extremely hot, ionized gas known as plasma. Hydrogen gas is a major component that undergoes nuclear - fusion in stars, but the overall state of matter in stars is plasma. Steam is water vapor and has nothing to do with star composition. Heavy elements are produced in stars through nuclear - fusion processes but are not what makes up all stars in general.

Answer:

plasma