Answer:
a. job rotation
Explanation:
"Job rotation" is a type of management approach whereby employees are being rotated or shifted from one job task to another. This is done at a regular interval in order to allow them to understand the different job tasks in the organization.
This will prevent boredom on the worker's end because he is also learning different tasks. At the same time, he will also know which tasks he is actually good at and if the manager realizes this, he'd be given more opportunities to explore his interest.
So, this explains the answer.