Hello there :)
I would say the answer is C. People are more aware of the dangers, so they are more likely to evacuate an area that is in the path of a hurricane
There was much devastation during the hurricanes. Belongings, Houses, Properties, an even Lives were taken by these disasters. This opened the communities' eyes more as to the effect that a natural disaster can have, and it helped people to realize the severity of the warnings that are given.
Hope this helps and have a wonderful day!