Im not sure. Maybe it’s to warn other people to not make the same mistake
I'm going to say B because the other answers just don't seem to make sense.
Answer:
I'll click on your name and see if I can help!
Answer: As the receptionist for Greenway Clinic, you should contact Alfredo Garza and ask him for his new address. You can contact him by using the <em>telephone number</em> that you have listed in your files. If he is not reachable by phone and has no forwarding address, the clinic will have to wait for Alfredo to come back for an appointment. If he does return, he will need to update all of his information so that his address will be on file.