The inner planets of the Solar System, which include Mercury, Venus, Earth, and Mars, are primarily composed of:
- Metals
- Rocks
The inner planets are terrestrial, meaning they have solid surfaces made mainly of rock and metal. The other options, "Games" and "Liquids," do not describe the primary composition of the inner planets. While some liquids may exist temporarily (like water on Earth or potentially on Mars), they are not a primary composition feature.
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