What is the most reliable method of research in lexicographery

Which is most engaging way of describe how to conduct an interview? a. one of the most common mistakes of interviewers is to ask "force-choice" or "leading" questions. b. although one might be inclined following a script slavishly, one should react to the interviewee's answers. c. remember, you want to encourage the interviewee to talk. avoid asking simple "yes or no" questions. d. the person you are interviewing may provide a number of challenges that can be overcome with care.