Answer:
Ordinances must not be discriminatory.
Explanation:
Considering the available options, the Proposed zoning ordinances must undergo many tests to determine their validity. Among these is that "Ordinances must not be discriminatory."
This is true because, before the approval of zoning changes, public hearings are held and the proposed zoning ordinances must pass through certain tests to determine validity, these tests include the following:
1. Ordinances must apply to all properties similarly
2. Ordinances must not be discriminatory
3. The provisions of the changes must be clear and specific
4. The power used to enact the change must be used reasonably
5. The ordinances must promote public health and general welfare under the police power concept