Concept:Saprophytes are organisms that feed on dead and decaying organic matter.
Explanation:A saprophytic relationship involves a saprophyte deriving nutrients from non-living organic material.
A mushroom growing on decaying vegetation is a fungus and acts as a saprophyte.
A vulture feeding on decaying meat is a scavenger, not a saprophyte.
An earthworm feeding on decaying vegetation is a detritivore.
A boy eating stale bread is a consumer.
Therefore, the only correct example is the mushroom.
Answer:B. mushroom growing on decaying vegetation