Grazing food chain:
Grazing food chain is the most common food chain and consists of the producers and consumers.
Example:- Grass→ Insects → Frog → Snake → Peacock
Decomposer/Detritus food chain:
Decomposer food chain begins with dead organic matter.
Detritus → Earthworm → Sparrow → Falcon
Food web:
Decomposer food chain is usually connected to the grazing food chain as some of the organisms in the detritus food chain can be preyed on by organisms in the grazing food chain.. For example:-
Detritus → Earthworm → Sparrow → Falcon
↘
Grass → Insects → Frog → Snake → Peacock
Final answer:
Frog