Question

which do sound waves travel fastest through? solids gases mixtures liquids

Explanation:

Sound waves travel fastest through solids. This is because the particles in solids are closely packed together. When a sound wave passes through a solid, the particles can quickly transfer the energy of the wave to neighboring particles. In gases, the particles are far apart, so it takes longer for the wave energy to be passed along. Liquids have particles that are closer than in gases but not as close as in solids. Mixtures can vary, but generally, they don't have the particle - density advantage of solids for fast sound - wave transmission.

Answer:

solids