Which of the Following Best Describes the Dialectic Method of Managing

Which of the following best describes the dialectic method of managing group decision making?

A) A group intentionally keeps presenting negative arguments to force further investigation of the alternative under consideration.
B) A structured debate between two conflicting courses of action is held.
C) Conflict generated within the group is minimized by enforcing group unity.
D) Conflict generated within the group is maximized by including not only factual counterarguments but also personal attacks.
E) The leader performs the role of peacekeeper when attacks are directed at individuals.