What type of RNA is a major component of the structure at which protein synthesis occurs? nuclear RNA messenger RNA ribosomal RNA transfer RNA

B) Messenger RNA

Explanation:

Messenger RNA [mRNA] molecules carry the coding sequences for protein synthesis and are called transcripts.Ribosomal RNA [rRNA] molecules form the core of a cell's ribosomes [the structures in which protein synthesis takes place] and transfer RNA [mRNA] molecules carry amino acids to the ribosomes during protein

the answer would be d