The answer is decomposers.
After the death of producers and consumers, decomposers (such as Actinobacteria, or other bacteria which are prokaryotes) eat that dead organisms and carbon, nitrogen, and other elements are released into the environment. It should be taken into consideration that eukaryotes (such as fungi) can be decomposers as well.
I hope this helps, good luck!
They prevent energy of some of the absorbed solar energy from leaving the Earth’s atmosphere
I think it's C, but I could be wrong
