I think it would be C because even after they don't use it anymore other creatures could use it
Id have to say it would be that the molecules of the perfume i guess. i learned in school that we smell because molecules of the item we smell go into our nose and the reseptors in our nose carry the smell to our brain and if we remember it a memory comes up of it.
Answer:
I think it is D that's would sound the best
Ribosomes are what make up proteins (the protein builders). There are a lot of ribosomes in the cytoplasm.
Explanation: Ribosomes connect mRNA(messenger RNA) and tRNA (transfer RNA) to synthesize polypeptides and proteins. Proteins are made up of building blocks amino acids. Polypeptides are chains of amino acids and portions of proteins in cells.
(Also, ribosomes are usually the small dots that you see in a cell diagram)
(Hope this helps :) )