What do millipedes primarily feed on?

Millipedes primarily feed on organic materials, which include decaying plant matter like leaf litter, decomposing wood, and other forms of organic debris found in their habitat. This diet plays a crucial role in the ecosystem as millipedes help break down and recycle nutrients back into the soil, aiding in decomposition processes.

While some options may seem plausible, such as live plants or wood, millipedes are detritivores; they do not typically consume live plant material. Instead, they prefer organic materials that are already decomposing, which makes option B the most accurate choice. Feeding on organic matter helps support their biology, as millipedes need a moist environment and decaying matter to thrive, which aligns with their ecological niche.