Read the following passage and answer the item that follows. Your answer to this item should be based on the passage only.

Coastal cities face a double exposure to climate change: rising seas threaten infrastructure built assuming a stable shoreline, while more intense storms strain drainage systems designed for a milder rainfall record. Cities that upgrade one system while ignoring the other often find their overall resilience barely improved.

Which one of the following is the most logical and rational inference that can be made from the passage given above?