Which of the following would not be used by a person attempting to use property in a way that is inconsistent with principal uses listed in the zoning ordinance?

It would be incorrect to choose a planned unit development because this is a type of zoning district specifically designed for properties with mixed land uses, not for those attempting to use a property inconsistent with the principal uses listed in the zoning ordinance. A special use permit would allow for a specific use of a property that is not normally allowed by the zoning district, a variance would grant permission for a specific deviation from zoning regulations, and a nonconforming use would involve a property that was legally established before a change in zoning regulations and is still allowed to continue its existing use.