Which factors contributed to the severe damage that new orleans experienced as a result of hurricane katrina
a: a strong tornado struck the city the same time as katrina.
b: none of the cities residents had been evacuated.
c: many of the cities parishes were built on land that was below sea level.
d: many of the cities levees were old and in need of repair.

One of the factor that contributed to the severe damage that new Orleans experienced as a result of Hurricane Katrina was: (C) Many of the cities parishes were built on land that was below sea level.
The hurricane also affect the direction of the wind flow that came from the sea, so for the cities below sea level, they have to face the both the danger of the moving hurricane and the floods that came from the sea.