Answer the question

Which of the following statements best describes the role of gravity in the formation of stars?

OPTIONS:
- Gravity converts solid matter into gases and light energy.
- Gravity causes gases and dust particles to condense into spheres.
- Gravity cools gases and liquids until they become one solid mass.
- Gravity pushes rocks and dust particles outward from a dense center.
Gravity causes gases and dust particles to condense into spheres.