Final answer:
The trial quantity for new prescriptions for eligible ODB patients is limited to one month.
Step-by-step explanation:
The subject of this question is Medicine. The question is asking about the trial quantity for new prescriptions for eligible ODB (Ontario Drug Benefit) patients. In this case, the trial quantity refers to how much of a medication can be prescribed to a patient when they first receive the prescription. The options provided are one month, three months, six months, and twelve months. The correct answer is One month because the trial quantity for new prescriptions for eligible ODB patients is limited to one month.