Answer:
The correct answer would be elongation factors.
Elongation factors refer to the set of proteins mainly involved in the elongation stage of the translation.
They help in adding the amino acids one by one to the growing polypeptide chain.
They help in this in three ways:
Firstly, they help in bringing aminoacyl-tRNA or charged tRNA to the ribosomal site.
Secondly, they help in the formation of a peptide bond in the growing amino acid chain.
Thirdly, they help in the process of translocation.