Which of the following is NOT considered a service operation risk?

Sufficient staffing is not considered a service operation risk because it implies a positive aspect of resource management. In the context of service operation, having adequate staffing ensures that the necessary personnel are available to manage and deliver services effectively. This directly contributes to the stability and reliability of service operations.

In contrast, the other options represent potential risks that can negatively impact service operations. A lack of management support can lead to insufficient resources, unclear direction, and reduced morale among staff, all of which can affect service delivery. Resistance to change indicates that personnel may not be receptive to new processes or improvements, which can hinder the implementation of necessary changes and innovations within the service operation. Loss of momentum implies that initiatives may not be sustained over time, leading to a decline in service effectiveness or the failure to achieve objectives. Thus, while sufficient staffing is a beneficial factor, the other options highlight challenges that could jeopardize successful service operation.