The captain was trying to prove that Charlotte's behavior was "unnatural" because he wants her to be found guilty and disliked and he wants to prove that he was right all along about her not being fit to be a crew member.
The use of a song to learn and retain information is known as the music mnemonics. The music mnemonics works the same way as someone recalling the lyrics of the song just as one can recall important details and information using a song. hope this helps. Therefore it would be B.
