Final answer:
One-story warehouses can reduce handling costs by utilizing more technology and reducing the need for manual labor, resulting in less traffic in the city.
Step-by-step explanation:
Warehouses have handling costs for loading and unloading, but these costs can be reduced through the use of one-story buildings instead of multistory buildings.
One-story buildings allow for the implementation of more technology, which can automate certain tasks and reduce the need for manual labor. This can save time and increase efficiency because there is less traffic in the city.