Answer: Option C
Explanation: Marketing uses inseparability to describe the main service value as distinct from goods. Inseparability is the feature of a service that makes it difficult to distinguish the service's supply or output from its utilization.
In the given case, the main objective of the consumer was to get her product but the service by the employee was also an inseparable part that affected the utility satisfaction of Wendy.
Hence we can conclude that the correct option is C.