Answer:
(D) Calling a patient to confirm an appointment.
Step-by-step explanation:
Which among the following processes of a dentist's office is the most likely a back-office process?
A back office process is a process that supports the front office processes. In the service industry such as this - dental services - a back office process won't require the presence of the client.
THE ANSWER IS (D)
Calling a patient to confirm an appointment doesn't require facing the patient or having them around.
Filing a claim with the patient's dental insurance provider requires the presence of one or both of the client and his insurance officer.
Cleaning a patient's teeth requires his or her presence at the dental clinic.
Same with option C.