The correct answer to this open question is the following.
Although there are no options attached, we can say the following.
Mark views society as a system of interrelated parts, while John views society as composed of groups competing for scarce resources. Mark would be considered a functionalist theorist while John would be seen as a conflict theorist.
In sociological terms, when we are talking about Functionalism, we are referring to the works of renowned authors such as Emile Durkheim, Robert Merton, and Herbert Spencer. These authors considered society as a system with parts that were interconnected in order to keep the proper balance in social interactions.
On the other hand, Conflict Theory started with the works of Karl Marx, and in opposition to the Functionalist theory, considered society as the place where many different groups competed for the limited resources in order to get power and control.