Albert, Betty, Christine and David are all very good students. When they hold their study sessions, they often discuss very difficult concepts in great detail. Christine's roommate, Elizabeth, who takes completely different classes, still learns from the discussions of the others. This is the case of a/an _____, which _____ a _____.

Question

Quizplus · Accepted Answer

This situation is an example of positive externality, where Christine, Albert, Betty, and David's study sessions benefit Elizabeth, who is a third party that is not involved in the study sessions.

Albert, Betty, Christine and David Are All Very Good Students