Yanfeng completes a qualitative action research study as part of his student teaching experience. His report includes front matter in which he acknowledges the people who helped with the study and an appendix showing his interview questions. When discussing his results, he presents quotations from the participants, who were students in his class. He uses only their initials, to preserve their anonymity. In his conclusions, he notes the next steps he plans to take in the classroom, based on his results. Which of the following pieces of advice is his advisor most likely to give him for revision?

a$.$ It's okay as is$--$because Yanfeng was in the classroom as a student teacher, preserving anonymity is impossible.

b$.$ Remove the acknowledgments so that any information about the school is anonymous, and then the initials are anonymous and so okay.

c$.$ Revise the results section so that the students are not identifiable, but keep the acknowledgments.

d$.$ Remove the acknowledgments section and the students' initials to preserve everyone's anonymity.