1. The city just enacted a new zoning ordinance in order to better the qualities of life and to benefit Builder, who is related to the Mayor of City. Pursuant to the new zoning law a quiet family neighborhood discovers that a huge shopping center is going to be built on what has been the neighborhood park. The residents of the neighborhood can
   1. File an action for a taking.
   2. Sue to enjoin the building of the shopping center as a nuisance.
   3. Contest City's power to make the zoning change.
   4. Do nothing since the zoning ordinance has already been changed.