Final answer:
Fabrication of metals is not a type of service operations; it represents a manufacturing process rather than the delivery of services.
Step-by-step explanation:
The type of operation that is not a type of service operations is C. Fabrication of metals. Service operations refer to the activities performed by organizations where the primary value is created by providing services, as opposed to physical goods. Retail trade, transportation and warehousing, banking, and hotels and restaurants all directly deliver services to their customers and are examples of service operations. Fabrication of metals is a manufacturing process, which involves the physical transformation of materials into products and is therefore not considered a service operation.