Imagine You Are a School Teacher and You Are Assigning

Imagine you are a school teacher and you are assigning a group project.Which of the following would most reduce social loafing?

A) Have students work in larger groups so each person has less work.
B) Have all group members involved in all parts of the assignment.
C) Have each member clearly identify the parts of the assignment they work on.
D) These would all reduce social loafing.