Three of the Following Can Be Effective Strategies for Helping

Three of the following can be effective strategies for helping students work together well in cooperative groups. Which one is inconsistent with the textbook's recommendations?

A) Assign a specific role that each group member should play; have students periodically rotate their roles.
B) Ask the highest-ability student in each group to serve as group leader and monitor the learning of the other group members.
C) Assign complex tasks that require diverse abilities and talents, such that every group member has something unique to contribute.
D) Give students a particular procedure to follow; for instance, give them examples of the kinds of questions they should ask one another as they jointly study new material.