Answer:
60 days
Explanation:
From the example given, tom was known as a chain smoker, although h stopped smoking eight years ago, but his records shows that he is still listed as a current smoker from his general practitioner.
He therefore seeks for a correction of that, because he has stopped smoker long ago, therefore, the change he seeks for must happen within 2 months (60 days) for the correction to be of effect.
