You Have Been Asked to Conduct Unscheduled Interviews to Learn

You have been asked to conduct unscheduled interviews to learn more about the potential audience for a water safety campaign. Which of the following best defines an unscheduled interview?

A) Interviewers are given a list of topics but are encouraged to phrase questions as they wish and to probe for more information when it seems useful and appropriate.
B) It occurs on street corners and other locations where people naturally congregate.
C) Interviewers are given specific questions to ask and are not allowed to make comments or ask additional questions.
D) Interviewers are given a set of questions but are allowed to ask for clarification and additional information as they see fit.