Read the passage below carefully:
To combat recurring severe urban flooding exacerbated by sea-level rise and erratic monsoon precipitation, several coastal municipal corporations have initiated funding mechanisms through specialized municipal green bonds to restore degraded urban wetlands. Proponents argue that restoring natural hydrological buffers such as wetlands and mangroves provides a cost-effective, self-sustaining alternative to building capital-intensive concrete drainage channels. However, municipal financial departments emphasize that bond issuance requires long-term revenue streams to guarantee coupon payments to institutional investors. Consequently, local authorities plan to levy targeted stormwater management fees on commercial real estate developments situated within designated flood-prone zones. By tying bond repayment directly to these specialized commercial levies, municipalities aim to ensure financial solvency while ecologically upgrading urban drainage infrastructure.
Statement: The author's proposition for maintaining the financial solvency of municipal green bonds relies on the unstated premise that commercial real estate developments in designated flood-prone zones have sufficient economic capacity to generate the targeted fee revenues.
Answer: Answer