The process of dividing work into separate tasks and assigning each task to a different person or group is called:

Job design is the process of dividing work into separate tasks and assigning each task to a different person or group. It involves identifying the tasks that need to be done, determining how they should be done, and specifying the qualifications required for the job. Job design aims to create a job structure that is efficient, productive, and satisfies the needs of both the organization and the employees. It also ensures that the work is divided in a manner that avoids overlapping of tasks and minimizes the chances of errors or conflicts. Therefore, option (a) Job design is the correct answer.