The correct answer is e. termination factor protein.
During translation, when a stop codon (UAA, UAG, or UGA) is encountered, a termination factor protein (also known as a release factor) binds to the ribosome. This factor helps to end the translation process by promoting the release of the newly synthesized polypeptide chain from the ribosome. No tRNA (like aminoacyl tRNA or peptidyl tRNA) would bind to the stop codon because there are no corresponding tRNAs for stop codons.
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