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

Question

A. Small lumps of material merge into larger clumps
B. Gravity acts on existing material, shaping it into a new form
C. Massive gas and dust clouds collapse
D. The force of orbiting stars generates collisions

Answer 1

The essential factor to the initial formation of galaxies, according to both major theories of galaxy evolution, is:

C. Massive gas and dust clouds collapse

This process involves the gravitational collapse of large clouds of gas and dust, leading to the formation of stars and the structure of galaxies.