Why the other options are wrong:

• He needs to book an emergency dental appointment.: He does not have an emergency dental problem.
• He wants to complain about tooth sensitivity.: Sensitivity comes up later but is not why he calls.
• He is checking whether OHIP covers dental care.: He is not asking about OHIP coverage in general - he wants whitening information.

Correct Answer: It is completed in one long appointment.

Why this is correct: The dentist says in-office whitening takes about 90 minutes in one appointment with a professional-strength gel. It is completed in a single visit.

Why the other options are wrong:

• It requires several short visits.: Multiple visits are not required for in-office whitening.
• It is usually covered by insurance.: The dentist says it is cosmetic and not covered by OHIP or most insurance.
• It uses a mild gel over two weeks.: A mild gel over two weeks describes the take-home trays, not the in-office option.

Correct Answer: Noticeable improvement happens within the first week.

Why this is correct: The dentist says noticeable tray results appear within the first week. The customer has a wedding to attend in three weeks, so starting soon leaves time for those results.

Why the other options are wrong:

• Custom trays can be ready within twenty-four hours.: Custom trays being ready within 24 hours is not mentioned.
• The results are visible right after the first session.: Results are not visible right after the first session - they happen gradually.
• The trays only need to be worn for a few days total.: The trays need to be used for about two weeks, not just a few days.

Correct Answer: They are gentler for sensitive teeth.

Why this is correct: The customer reports sensitive teeth. The dentist recommends take-home trays with a gentler gel, while in-office treatment can cause short-term sensitivity.

Why the other options are wrong:

• They produce instant results.: Take-home trays do not produce instant results - they work gradually.
• They are fully covered by OHIP.: Whitening is cosmetic and not covered by OHIP.
• They are the newest option available.: Being the newest option is not the reason given.

Correct Answer: It should have been done within the last six months.

Why this is correct: The dentist says the man should have had a cleaning within the last six months before whitening. If not, they can book one at the clinic first.

Why the other options are wrong:

• It must be done on the same day.: The dentist ideally wants a cleaning within the last six months; the conversation does not specify a same-day cleaning requirement.
• It can be skipped if teeth look clean.: The dentist says a cleaning is important, not that it can be skipped.
• It is only required for in-office whitening.: The cleaning recommendation applies to both whitening options.

Correct Answer: Book a consultation at the clinic.

Why this is correct: The dentist offers to book a consultation to check the man's teeth and get started. The man has not committed to a specific treatment yet, so a consultation is the logical next step.

Why the other options are wrong:

• Choose the in-office treatment immediately.: He has not chosen the in-office treatment - he is leaning toward take-home trays.
• Delay whitening until after the wedding.: He wants to be ready for the wedding, so delaying is unlikely.
• Look for a whitening product at a pharmacy.: Looking at pharmacy products is not discussed.