Which of the following statements about worker motivation is most consistent with the findings of the hawthorne studies? worker motivation will fall significantly if lighting conditions, temperature, and other elements of the physical environment are not at kept at their optimal levels employees are more motivated if they feel they are part of a special group or project the best way to motivate employees is to offer pay raises, bonuses and other financial incentives to employees who meet or exceed clearly specified goals worker motivation is unimportant in determining the level of worker productivity, because productivity is primarily determined by external factors such as the speed of the machinery the employees operate none of the above