If a student fails to recognize how to properly quote the words of an arthur that student may be found guilty of

This would be an example of B. unintentional plagiarism. Plagiarism is when you take credit for someone else's work. If you are writing a paper and include someone else's work, but don't cite the reference correctly, you are unintentionally getting credit for their work. If you are purposely trying to pass the work off as your own, then it would be intentional. Hope this helps

what is the question though?