A case study is an analysis of a person, group or event which is described in detail.
Explanation:
To begin writing a Case Study, the best way to start is to:
Consider the case very meticulously: All aspects of the case must clear to you. Where possible, write down special points that jump out at you, taking note of facts and important questions or problems.
Narrow down your Analysis to four or five key problems: Identify the cause of these problems, and who and what they affect as well as their origins;
Try to arrive at solutions to the problems: This will require the extensive use of all resources available to you besides the research.
Select the best possible solutions: The merit and demerit of each solution must be considered. Above all, it has to be realistic.
Birthday is the subject of the sentence. This is because t<span>he subject of a sentence is the person, place, thing, or idea that is doing or being something.</span>