which evidence is most likely used to indicate the beginning of solar system formation?\nmaterials combined…

which evidence is most likely used to indicate the beginning of solar system formation?\nmaterials combined to form a mass.\nmaterials were pulled together by gravity.\nwater condensed and collected to form oceans.\ndifferent species of microorganisms lived on earth.
Answer
Brief Explanations:
The solar - system formation is thought to have started with the gravitational collapse of a giant molecular cloud. Materials being pulled together by gravity is a key initial step in this process. The formation of a mass is a later stage after gravitational pull. The formation of oceans and the presence of microorganisms on Earth are events that occurred long after the start of solar - system formation.
Answer:
Materials were pulled together by gravity.