Detritivores in the soil break down detritus into smaller particles. This process is called ______.

fragmentation

The correct answer is Option (3) -fragmentation

Fragmentation is the process by which detritivores break down large organic matter into smaller particles or fragments. Detritivores, such as earthworms, insects, and certain microorganisms, physically break apart organic material like dead plant and animal remains. This breakdown increases the surface area of the organic matter, making it more accessible to decomposers like bacteria and fungi.