B. Green Plants
C. Dead organic matter
Correct Answer: C. Dead Organic Matter
Detail about MCQs
The detritus food chain, also known as the detrital food chain or decomposer food chain, begins with dead organic matter. This organic material comes from the remains of plants and animals, including their waste products. Detritivores, such as bacteria, fungi, earthworms, and certain insects, break down this dead organic matter into smaller particles, converting complex organic compounds into simpler ones through processes like decomposition.