who were the apex professionals who can conducted the case study
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Answer:
A case study involves an up-close, in-depth, and detailed examination of a particular case or cases, within a real-world context.[1][2] For example, case studies in medicine may focus on an individual patient or ailment; case studies in business might cover a particular firm's strategy or a broader market; similarly, case studies in politics can range from a narrow happening over time (e.g., a specific political campaign) to an enormous undertaking (e.g., a World War).
Generally, a case study can highlight nearly any individual, group, organization, event, belief system, or action. A case study does not necessarily have to be one observation (N=1), but may include many observations (one or multiple individuals and entities across multiple time periods, all within the same case study).[3][4][5]
Case study research has been extensively practiced in both the social and natural sciences.[6][7]:5–6[8][9]