Amanager surveyed his employees to find out what motivates them at work. over three quarters of the employees responded that they are most concerned with providing for themselves and their families. the rest said they were motivated to fit in with society. to keep his employees motivated, the manager is most likely to a. use extrinsic motivation as much as possible b. use a mixture of intrinsic and extrinsic motivators for all employees c. file away the surveys because motivation does not determine performance d. use intrinsic motivation as much as possible