The correct option is A Aminoacylation of tRNA
Translation refers to the process in which the amino acids get polymerised to form a polypeptide chain, the sequence of which is determined by the order of bases present in mRNA.
Joining of amino acids requires the formation of peptide bonds which is an energy-requiring process.
Hence, the first phase in translation is the activation of amino acids in the presence of ATP. The activated amino acids are then linked to their cognate tRNAs, a process commonly called as charging of tRNA or aminoacylation of tRNAs.