The correct option is C UAC
Transfer RNA (tRNA) is the key to deciphering the code words in mRNA. The correct tRNA with its attached amino acid is selected at each step because each specific tRNA molecule contains a three-base sequence that can base-pair with its complementary code word in the mRNA. The anticodon loop has the anticodon according to the amino acid. The picture indicates the anticodon for the molecule is UAC. Thus, the correct answer is option B.