What is the main role of tRNA in translation?

The main role of tRNA, or transfer RNA, in translation is to transport amino acids to the ribosome. Each tRNA molecule has a specific amino acid attached to it, and it recognizes the corresponding codon on the mRNA strand through its anticodon region during the process of translation. This ensures that the correct amino acids are added in the proper sequence to build a polypeptide chain, ultimately forming a protein.

Through this mechanism, tRNA serves as an adaptor that links the genetic code found in mRNA with the amino acids used to construct proteins. It is essential for the fidelity of protein synthesis because any errors in the incorporation of amino acids can lead to dysfunctional proteins. Thus, the correct option highlights the critical function tRNA plays in the overall process of translating the genetic information encoded in mRNA into a functional protein.