A training class has been rescheduled for one hour earlier than originally planned.

Explain to the ten participants present that this was not an error on instructor's part, suggest that they speak with the scheduler to voice their concerns.

Conduct individual interviews at the end of the session to provide insight on whether this type of mistake happens frequently.

Inform the client of the discrepancy and begin the course on time.

Suggest to the client that the class be cancelled and rescheduled for another time.