Which statements about the effects of hurricane katrina on new orleans are true? choose all answers that are correct. several high-rise office buildings collapsed, killing and injuring over 5,000 people. local, state, and federal government agencies reacted quickly, saving the city from major damage. some oil refineries in the area flooded, releasing toxic sludge into the water that covered much of the city. the city's position between lake pontchartrain and the mississippi river led to widespread flooding.