Marcos is working with Justin in a counseling situation. Justin is a resident of the local jail, having been found stealing donuts from a local Ralphs grocery store bakery department. When caught, Justin claimed that the devil told him to do it and that he had done far worse things in the past. Marcos visits with him and makes notes about what he learns about Justin each time they are together. What type of study does this scenario represent?
a) Laboratory observation
b) Survey
c) Case study
d) Experiment