Answer:
c. Groupthink
Step-by-step explanation:
Groupthink is defined as a phenomenon in which the norm for consensus overrides the realistic appraisal of alternative courses of action. In groupthink, members of the group are more interested in maintaining harmony and hence will not bring up alternative course of actions for discuss which may threaten the harmony enjoyed and this usually results in the adoption of the second best line of action or irrational outcomes rather than the best.