The ribosome reads the mRNA (messenger RNA) and translates the nucleotide sequence into a polypeptide (protein) sequence. It reads the nucleotides in groups of 3 called codons and then accepts the correct amino acids from charged tRNAs to build the polypeptide in the correct order.
Bcbcndbvfjdbxnxbxnxbxbxbxbxbxhdbxh
I'm 100% that the answer is D, thermal conductivity.
It was either C or D but D makes more sense than C does
so your answer is D
B is the nucleoid
D is Ribosomes
Hope this helps :)