Explanation:

- Refraction: This is the bending of light as it passes through different mediums. It changes speed and direction but doesn’t split colors.

- Reflection: This occurs when light bounces off a surface. It doesn’t separate light into colors.

- Scattering: This is when light is forced to deviate in various directions due to particles or molecules. It affects colors but doesn’t split light as a prism does.

- Dispersion: This involves the splitting of white light into its different colors. This happens because each color refracts at different angles in a medium like a prism.

- Dispersion is the correct answer.