Answer:
functionalist; conflict theorist.
Step-by-step explanation:
Whenever you see a sociologist that believes that every aspect of the society that is to say all institutions in the society are somehow connected and works together to produce a stable and productive society then we say that person is a FUNCTIONALIST and the concept in sociology is known as functionalism or structural functionalism. Which means that Kevin is a functionalist as it is given in the question that Kelvin; ''views society as a system of interrelated parts...".
Conflict theorists are those sociologist that focus their theory on Marxism and inequalities. Conflict theorists also believes that in order to maintain power one need to consider education. When there is inequalities there is competition for scarce resources so Patric in the question is a conflict theorist.