Question

which evidence is most likely used to indicate the beginning of solar system formation? materials combined to form a mass. materials were pulled together by gravity. water condensed and collected to form oceans. different species of microorganisms lived on earth.

Explanation:

The solar system formed from a cloud of gas and dust called the solar nebula. Gravity caused the materials in the nebula to be pulled together, marking the start of solar - system formation. The formation of oceans and the presence of microorganisms on Earth are events that occurred much later in Earth's history, long after the solar system began to form. The combination of materials to form a mass is a later stage after gravitational attraction has started the process.

Answer:

Materials were pulled together by gravity.