Final answer:
To comply with floodplain ordinance's regulations after a tornado, assisting in elevating buildings is most effective. Government programs can support cleanup and tax incentives, and businesses may collaborate for recovery efforts. The correct answer is C. Assist in elevating the buildings.
Step-by-step explanation:
To help property owners comply with floodplain ordinance's substantial damage regulations after a tornado has caused substantial damage, the most appropriate assistance that can be offered is assist in elevating the buildings. Elevation of buildings is a proven mitigation strategy that helps make structures more resistant to flood damage.
It is also typically a requirement in floodplain management regulations to bring substantially damaged buildings into compliance. Offering financial aid, providing free construction materials, or granting variances for repairs may also be beneficial, but these options do not directly ensure compliance with the substantial damage regulations which often require specific mitigation measures like elevation.
Government programs may provide support in various forms, such as funding for neighborhood cleanup or reduced tax payments for property owners who undertake the repairs and upgrades necessary to comply with floodplain regulations. Additionally, collaboration among local businesses through a group that manages neighborhood cleanup and rebuilding efforts could be envisioned, further assisting in the recovery from tornado damage within a floodplain.