Based on Fredick Taylor's experiments and observations as a manufacturing manager in a variety of settings, he developed which principles to increase efficiency in the workplace: a. Codify the new methods of performing tasks into written rules and standard operating procedures. b. Study the way workers perform their tasks, gather all the informal job knowledge that workers possess, and experiment with ways of improving how tasks are performed. c. Managers must create a well-defined system of rules, standard operating procedures, and norms so they can effectively control behavior within an organization. d. Workers should take as many breaks as they desire throughout the workday, without any concern for productivity or efficiency