Question

what is case study?.....

Answer 1

hi friend.
here is your answer.

a detailed study of a person , group , situation etc. over a period of time☺☺☺☺

Answer 2

1. A process or record of research into the development of a particular person, group, or situation over a period of time.

Ex:-

"the case study was undertaken over a period of two months through a series of visits to the school"

2.  A particular instance of something used or analysed in order to illustrate a thesis or principle.

Ex:-

"airline deregulation provides a case study of the effects of the internal market"