Answer:
The author gives the reason for George not being immediately released as:
B The staff is too busy with other tasks to process his release.
Explanation:
In hospital environments where the staff is always busy 24 hours, sometimes it happens that a patient who is supposed to be discharged will not be released immediately. This is the situation with George. He had been treated and was discharged. But, the personnel handling the discharge seems to be occupied with so much. Therefore, George's discharge may be delayed.