The correct answer is - flooding.
The Hurricane Katrina was a devastating one. It had very strong winds that were very destructive, and the rainfall was also very intense, but it was not what made the biggest damage in New Orleans, instead it was the flooding of the city.
New Orleans is a city that is on a very small elevation, close to sea level, so it is very vulnerable to the sea level rising, which unfortunately did happened with the Hurricane Katrina. Because of the strong winds, and the heavy rainfall, the sea started to flood the city and destroyed big portion of it. Lots of people lost their lives, and there was also a huge material damage.
The Von Thunen model has an epicenter which is the center of a settlement. The model shown has a center area and grows outward just like the Von Thunen model. All the important goods are closer together while the forest and non important goods are farther outward. The new map makes the assumptions of goods are carried out by railroads and the climate and soil quality are the same throughout the map but may vary depending on specific areas very much like the Von Thunen Model.
Hope this helps. I'm on this question too so I could be wrong but at least I tried.
There is no image but it would be the ocean