Final answer:
The GPC is used as the method of payment for commercial training valued at or below $25,000, instead of employee reimbursement.
Step-by-step explanation:
In the given question, the GPC refers to a Government Purchase Card. The GPC is used as a method of payment for commercial training using the SF182 form. This allows for payment of training valued at or below $25,000 without the need for employee reimbursement via miscellaneous payment.