Which of the Following Statements Is True with Regard to the Role

Which of the following statements is true with regard to the role of a leader in preventing the occurrence of groupthink?

A) The leader should not play a critical role in initiating steps to prevent groupthink because these steps need to be initiated by other group members in order to be effective.
B) The leader should ensure that group members do not fall into the role of "critical evaluator."
C) The leader should remain impartial and not voice his or her opinions or expectations until all other group members' views have been heard.
D) The leader should voice his or her opinion first but only to a select few.