Task: Question Answering
Input (English): Question: In protein biosynthesis, base pairing takes place during the translation process between: 
 Options:  <1> RNA and DNA. <2> DNA and ribosomal RNA. <3> The transfer RNA and the ribosomal RNA. <4> The messenger RNA and the transfer RNA. <5> 18S ribosomal RNA and 5S ribosomal RNA.
Output (English): 4