Clinton is probably asking himself which information he wishes he knew earlier, and if he made the right decision when weighing opportunity costs.
Answer:
D) a conditional use permit.
Explanation:
A conditional use permit is a type of permit which requires the use of the discretion of the state for approval.
In this scenario, Kelly finds that her intended improvement, a veterinary clinic, is allowed by the zoning classification of her land only if she gets specific approval for that single use. This is most likely an example of a conditional use permit.