one reason hurricane katrina was so devastating for new orleans is that\nmany people had to be rescued by…

one reason hurricane katrina was so devastating for new orleans is that\nmany people had to be rescued by helicopter.\nno emergency shelters were available.\npeople were surprised by the storm.\nmany residents had not evacuated.

one reason hurricane katrina was so devastating for new orleans is that\nmany people had to be rescued by helicopter.\nno emergency shelters were available.\npeople were surprised by the storm.\nmany residents had not evacuated.

Answer

Answer:

D. many residents had not evacuated.

Brief Explanations:

The lack of evacuation meant more people were in harm - way, increasing the hurricane's devastation impact. Other options are either consequences (people rescued by helicopter) or not true (no emergency shelters, people were surprised as there were warnings).