Hank, a citrus grove manager, wants to know how to avoid groupthink. What advice should you give?

A) Decrease the size of the group
B) Have someone play the devil's advocate
C) Make all key decisions yourself
D) Make sure everyone likes one another and gets along
E) Avoid conflict

Having someone play the devil's advocate can help the group consider alternative perspectives and avoid the pitfalls of groupthink. Decreasing the size of the group can also be helpful, but it may not always be feasible or effective. Making all key decisions yourself, making sure everyone likes one another and gets along, and avoiding conflict are not effective ways to avoid groupthink as they may actually contribute to it.