Groups Perform Better Than Individuals on a Wide Range of Demonstrable

Groups perform better than individuals on a wide range of demonstrable tasks.What is a key reason why groups outperform individuals faced with the same task?

A) Groups are much more overconfident than individuals,regardless of their actual accuracy.
B) Groups are more likely to exacerbate some of the shortcomings displayed by individuals.
C) Groups outperform individuals due to a process in which group members become more accurate during the group interaction.
D) Groups are more likely to neglect case-specific information and ignore base-rate information.