Which factor is essential to the initial formation of galaxies, for either of the theories describing galaxy evolution?(1 point)

Question

Small lumps of material merge into larger clumps.
Small lumps of material merge into larger clumps.

Massive gas and dust clouds collapse.
Massive gas and dust clouds collapse.

Gravity acts on existing material, shaping it into a new form.
Gravity acts on existing material, shaping it into a new form.

The force of orbiting stars generates collisions.

Answer 1

Massive gas and dust clouds collapse.