The first phase of translation is
Option: 1 Binding of mRNA to the ribosome
Option: 2 Recognition of DNA molecule
Option: 3 Aminoacylation of tRNA
Option: 4 Recognition of an anti-codon
The first phase of translation is an initiation in which there are the two ribosomal subunits (small and large), The mRNA to be translated, the first (formyl) aminoacyl tRNA (the tRNA charged with the first amino acid),
Hence, the correct option is (a).