Which of the Following Is Not a Prescriptive Strategy to Prevent

Which of the following is not a prescriptive strategy to prevent groupthink from developing?

A) One or more members should be assigned the position of devil's advocate.
B) Group members should be kept together as one unit and not divided into separate discussion subgroups.
C) Outsiders should attend the meetings and challenge the group's views.
D) After reaching a preliminary decision,the group should call a second-chance meeting and ask each member to express remaining doubts.