Answer:
A. Authorities in New Orleans weren’t prepared for the chaos and destruction that would result from the levees breaking and the resulting flood.
F. Louisiana didn’t have the proper plans in place to respond to a disaster of this magnitude, and because of this they lost more citizens than expected.
Explanation:
These two statements (A and F) express the central idea of the text. What happens in the text <em>(2 levees fail, toll rises)</em> shows that NEW Orleans and Lousiana were not prepared and had no plans in place for disaster of that magnitude.
Option B is incorrect because residents and authorities were not expecting a flooding of such huge magnitude. Had they been expecting this, they would have either migrated or put proper plans in place before the hurricane.
Option C may be true but not correct, because the text is not talking about adequate warnings, or how loss of lives could be been avoided.
Option D is incorrect because there is no mention of volunteers and aid in the text.
Option E too may be true but not correct as text has no mention about efforts and problems to rescue the residents.