Answer:
These four students would be considered members of a clique.
Step-by-step explanation:
A clique refers to a group of individuals who generally have similar likes/dislikes, etc. and they tend to interact mostly with one another. Their relationship may seem exclusive to others.
In this case, Jane, Mark, Courtney and Kelly have been interacting with each other over a long period of time and it can be deduced that they have started to develop similar interests, views, etc. They would be considered members of a clique, of an exclusive group.