Dorsal Cavity
Explanation:
The body cavity that is long, continuous and located in the back of the body is the Dorsal cavity
I got D, C, A, B, C, B, D, C.
C (proteins) instead of D (nucleic acids) because if you look at a nucleic acid structure, you'll see that sulfur is not found in it. Sulfur is found in two amino acids (methionine and cysteine), which means it could be found in proteins since amino acids build proteins
That would be the chloroplast.