Final answer:
The Ontario Drug Benefit program covers up to a 100-day supply of prescribed medication, with the exception of an additional 30 days for out-of-province vacation supply, making option C) 90 days; 30 days the correct answer.
Step-by-step explanation:
The student's question pertains to the Ontario Drug Benefit (ODB) program's policy on prescription medication supplies. The correct answer is: ODB will only pay a max of a 100-day supply, the only exception being the additional 30 days for an out of province vacation supply. So, the correct option is C) 90 days; 30 days. There are some conditions under which the ODB might limit the dispensing of medications to less than a 100-day supply, such as narcotics and controlled drugs, or when it is clinically appropriate to do so, but this would not change the general policy for maximum days supplied under ODB.