43.)What is the most common operational index used by organizations in a ratio analysis? A. sales level B. units produced C. clients served D. production hours 44.)In the Delphi technique, why do the experts NOT meet face-to-face? A. They do not have the time. B. They want to lower costs. C. They worry about groupthink. D. They lack communication expertise. 45.)What type of analysis reveals the historical relationship between the operational index and the demand for labour? A. correlation B. multivariate