The solution that would do the LEAST to help protect the existing wetlands in the proposed construction site is:
allowing the construction to continue as requested by the builder, but talking about expanding other wetlands in the future.
This option does not actively address the immediate destruction of the existing wetlands and allows for the negative impact to occur without providing a concrete solution to mitigate that impact. The other options involve direct actions that either reduce the wetland area affected by construction or rehabilitate the area, making them more effective in protecting the environment.