Final answer:
GXG's expedited delivery provider is not specified; it can be a major courier like FedEx, UPS, DHL, or a local postal service. Accurate information can be found on GXG's official website or via their customer service.
Step-by-step explanation:
The student is inquiring about the expedited delivery provider for a company known as GXG. The specific details about which courier service GXG uses for expedited delivery can vary, as companies often partner with various delivery services to ensure fast shipping times to their customers. Popular providers generally include companies like FedEx, UPS, DHL, or national postal services, depending on the geographical location and the service level agreement between GXG and the provider. To get the most accurate and up-to-date information regarding GXG's expedited delivery provider, one would typically need to check the official GXG website or contact their customer service directly.