On the ribosome, mRNA binds: (A) between the subunits, (B) to the large subunit, (C) to the small subunit, (D) none of these
Answer is C. During initiation, the small ribosomal subunit binds to the start of the mRNA sequence.
Then a transfer RNA (tRNA) molecule carrying the amino acid methionine binds to what is called the start codon of the mRNA sequence.