Answer:
a process or record of research in which detailed consideration is given to the development of a particular person, group, or situation over a period of time.
"the case study was undertaken over a period of two months through a series of visits to the school"
a particular instance of something used or analyzed in order to illustrate a thesis or principle.
"airline deregulation provides a case study of the effects of the internal market"
Step-by-step explanation: