Answer: Group-think
Explanation: Group-think is the activity that involves the decision-making involving the every member of the group.Due to this type of decision making activity, usually the creativity lacks in the results .
The considerations like advantage, disadvantage, individual responsibility, opinions etc are absent which results in the whole group going along with the group decision.
Thus, the case of group-think decision is seen in the question because the team members are supporting every decision without any objection, question and not including their opinions.