People turn to groups to perform tasks

A) when the task is beyond the skills and resources of a single person.
B) when the consequences of poor performance would be catastrophic.
C) when the task is so complex that it can only be successfully performed through integrated action.
D) in all the circumstances listed here.

All of the options listed are valid reasons for people to turn to groups to perform tasks. When a task is beyond the skills and resources of a single person, a group can bring together multiple individuals with different strengths and abilities. When the consequences of poor performance would be catastrophic, a group can provide additional checks and balances to ensure quality work. When a task is complex, a group can offer different perspectives and ideas to successfully complete the task.