Answer:
A. Tiered workforce
Step-by-step explanation:
Tiered workforce: This is an approach of meeting labor requirement by varying the level of workforce. During high demand for a product when existing workforce cannot longer meet the demands of consumers, firms employs extra staffs either ad-hoc or permanent staff. Ad-hoc staffs (temporary or part time) are usually hired so they can be laid off after the demand period.
This is done in order to cut down the cost of labor and to increase the firm's profits. Tiered workforce usually exist in a firm that produce seasonal product, they do not have high demand for their products all year round, so there is need to cut down cost when product is not highly demanded.