A Professor Assigns a Group Project

Multiple Choice

A professor assigns a group project.In one group,Darin does nearly all the work.Martin,Aaid,and Abbey seem to shirk responsibility,assuming that because it's a group,someone else will pull the extra weight.Viewed with a sociological lens,this is:

A) Malthusian inevitability.
B) academic stratification.
C) the balanced principle.
D) the free rider problem.