A.I. Explanation:

Option 1: "It was formed when a star came together."

Explanation: This option is incorrect because the text states that the solar system was formed from a cloud of gas and dust, not from a star. The formation of the Sun occurred later in the process, after the gas and dust were compressed, which contradicts the claim that a star was involved in the initial formation.

Option 2: "Waves of energy became compressed into matter."

Explanation: This option is incorrect as it misrepresents the process described in the text. The energy waves caused the cloud of gas and dust to compress, but they did not become matter themselves. The text emphasizes that the compression of the gas and dust led to the formation of planets and moons, not that the waves transformed into matter.

Option 3: "Gases were compressed to form solid particles."

Explanation: This option is correct because it accurately reflects the process described in the text. The text explains that as the gas and dust were compressed, they coalesced into larger units of mass, which implies the formation of solid particles such as planets and moons from the gaseous material.

Option 4: "The planets on the periphery of the system were composed of solid rock."

Explanation: This option is incorrect because the text does not specify the composition of the planets as being solid rock. It only mentions that the gas and dust coalesced into larger units of mass, which could include various types of materials, not exclusively solid rock.