Final answer:
Groupthink is a phenomenon in which a group reaches a decision by eliminating all critical thinking that threatens consensus.
Step-by-step explanation:
The statement that groupthink is a phenomenon in which a group reaches a decision by eliminating all critical thinking that threatens consensus is true.
Groupthink refers to the tendency for group members to conform to the dominant opinions or decisions within the group, often at the expense of critical thinking or considering alternative viewpoints. It is a phenomenon that occurs when the desire for group harmony and cohesion outweighs the potential negative consequences of a poor decision.
For example, in group settings, individuals may refrain from expressing their dissenting opinions or engaging in critical analysis of the options, in order to maintain harmony and avoid conflict within the group. This can lead to flawed decision-making processes and outcomes.