Answer:
Devils advocacy
Explanation:
Decision making technique are the technique of Devils advocacy for group think. The number of people become the devil advocate in group think that play an important role in it. In this process a person play a role of critics who proposed the decision.
There are some strength and weaknesses of devil advocacy. The positive aspect about this concept is that it prevent from the group think where all members have their decision and eliminate or accept decision that is even not suitable or might not be the best alternative for group think.