Final answer:
Sam must be registered with a licensed brokerage in Alberta within one year of passing the last practice exam.
Step-by-step explanation:
The correct answer is C) He must be registered within one year of passing the last practice exam.
Once Sam has completed the Real Estate Associates Program (REAP), he must be registered with a licensed brokerage in Alberta within one year of passing the last practice exam. This means that Sam has a one-year window to complete the registration process after passing the exam.
It is important for Sam to take this timeframe into consideration and begin the registration process promptly to ensure he can pursue his career in real estate without delay.