Answer:
D). Populate Default Subscription Term on the Quote Line.
Step-by-step explanation:
In order to rectify the mistake, the Admin must 'populate the default subscription term on the quote line' as it would be the most required action in order to normalize the scenario. Once the users are aware of the term of the quote, they would create the quotes accordingly in order to fit themselves to the default term and even they create, it would automatically get rejected. Thus, option D is the correct answer.