The correct statement is:
Light waves travel faster in solids than in liquids and air.
However, none of the options you provided match this statement accurately.
To clarify:
- Light travels fastest in a vacuum, then in air, and slowest in solids and liquids when considering the refractive index.
- Generally, in most cases, light travels fastest in a vacuum, then air, followed by solids, and slowest in liquids due to the differing densities and elastic properties.
If you need to choose from your options, none are entirely accurate, but the statement "Light waves travel faster in solids than in air" is closer to correct if typically considering specific materials.