Is there a problem with the student's sentence?
1) No, the student's sentence is fine because the student cited the author (Daigle).
2) Yes. The student's sentence can be considered plagiarism because the student did not put the sentence in quotation marks.
3) Yes. The student's sentence is problematic because the student did not provide the page number of the quote.
4) Both b and c (i.e., Both "yes" answers)