Based on information in the passage it can be concluded that, during the one-year probationary period, a firefighter must have obtained an Emergency Medical Technician certificate.
Explanation:
According to the requirements to be a firefighter, the process follows very specific steps prior to be hire and after being hired, then the probationary year starts at the moment of being hired, During this year they will take the 15 week fire department training course, as an obligation not a possibility, and option B is the only one that occurs during the probationary year.
