Final answer:
Groupthink is a phenomenon where a group prioritizes consensus over critical thinking. The Bay of Pigs invasion is an example of groupthink in action, as advisors failed to critically evaluate the plan.
Step-by-step explanation:
Groupthink is a phenomenon that occurs when a group of people prioritize consensus and conformity over critical thinking and independent judgment. An example of groupthink can be seen in option B, the Bay of Pigs invasion. In this event, President Kennedy's advisors failed to critically evaluate the plan and instead went along with the group consensus, resulting in a disastrous outcome.
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