When an advisor reviews a student's college essay draft, which action is considered an ethical breach of professional responsibility?

The correct answer to the question "When an advisor reviews a student's college essay draft, which action is considered an ethical breach of professional responsibility?" is Option C: Substantially rewriting paragraphs or sections to achieve a higher level of sophistication..

The other options — A) Providing specific grammatical corrections and proofreading suggestions., B) Guiding the student to brainstorm alternative topics if the current one is ineffective., D) Asking clarifying questions to help the student deepen their reflection. — are incorrect for this College Advising question. As explained above: An advisor's role is to guide and suggest improvements, not to write the essay for the student. Substantially rewriting undermines the student's voice and constitutes plagiarism.