Final answer:
In a colloid, the dispersed particles are D) small solid or liquid particles that are spread evenly throughout a dispersion medium. They are larger than the solutes in a solution but smaller than the particles in a suspension.
Step-by-step explanation:
A colloid is a type of heterogeneous mixture where the dispersed particles are small solid or liquid particles. These particles are larger than the solutes in a solution but smaller than the particles in a suspension. They are spread evenly throughout a dispersion medium, which can be a solid, liquid, or gas. Examples of colloids include milk, fog, and gelatin.