The formation of a star begins with a cloud of interstellar gas and dust called a/n

A. aurora.

B. nebula.

C. protostar.

D. white dwarf.

Stars begin as vast clouds that are called Molecular clouds, or Nebulae. Nebulas are produced of the hydrogen in the molecular form (H2), dust, helium and other ionized gases. Aurora is a natural display of glowing light in the night sky, connected with the magnetic field of the planet. Protostar is an undeveloped star in it's early stages of creation. It comes after the stage of Nebula. White Dwarf is the last phase of the star's life. Answer: B) Nebula.