Answer:
d. open-ended
Explanation:
An item on the Campus Bookstore's study questions respondents to say the shop, in their own words, whatever they like least about textbook purchasing. The aforementioned item would be an exemplary about a(n) open-ended question.
An open-ended question is a question that cannot be answered including a "yes" or "no" rejoinder, rather with an unvarying rejoinder. Open-ended questions are phrased as a comment that wants a reply.
