I believe it would be C) Cellulose. As this is one of the essential components found in the cell wall of plant cells.
small chicken farms turned into factories because it was cheaper to
maintain and it also made it cheaper for people to buy eggs. However
this produced a huge problem of what to do with the chicken manure
and this is also a problem amongst other types of livestock as well as well as factories having big oil spills hope this helps sorry didnt know what you wanted for a answer
Solar eclipse
Ignore this need to get 20 characters