In rst job in a consultancy you have been assigned to a special proiect to assist an organisation that was neany put out of business by a new business in the sector, Your line manager wants to know why they did not see this new competitor earlier and what they should new thing about doing the next time. You interview all the middle managers, you examine the reports of various committees and departments Within the organisation, you look externally at the forces and inuence in the busmess. In summary you have worked on a O a. Case study 0 b. Selfreported inventory 0 c. Crosssectional study 0 d. Correlational study 0 e7 Longitudinal study