One of the Service Coordinators in your department is not receiving emails when new service requests are assigned to her

[answerhappygod]

One of the Service Coordinators in your department is not receiving emails when new service requests are assigned to her. The system administrator that built the service request assignment rules is on vacation so you are helping troubleshoot this issue. What is the most likely cause of this issue?

A. The Email Notification workflow action is inactive.
B. The Service Request record in question is missing Information in key fields.
C. The workflow responsible for the assignment is inactive.
D. The email notifications are sent to the user's manager. E. The Send Email Notification check box Is not selected for the assignment rule.