which substance gets broken down in a homogeneous mixture?\ncolloid\nsolution\nsolute\nsolvent

Brief Explanations:

In a homogeneous mixture (solution), the solute is the substance that gets broken - down and dispersed in the solvent. A colloid is a type of mixture itself, not a substance broken down in a homogeneous mixture. The solvent is the substance that does the dissolving.

Answer:

C. solute