Which statements explain why new orleans suffered extreme flooding as a result of hurricane katrina?

choose all answers that are correct.

a.
no one expected a hurricane in new orleans, so the city had no defenses.

b.
government agencies had no idea that the city’s levees were in need of repair.

c.
half of all of new orleans’s parishes were built at or below sea level.

d.
the waters of lake pontchartrain rose rapidly and breeched the levees.