In the aftermath of Hurricane Katrina, President George W. Bush declared the Gulf Coast a federal disaster area, thereby allocating billions of dollars to help rebuild infrastructure. This financial aid is an example of which step in emergency management?

Recovery.

Explanation:

As per the question, the given financial aid exemplifies the 'recovery' step of emergency management as the president's declaration aimed to recuperate with the aftereffects of Hurricane named Katrina by 'allocating the funds of billion dollars to redevelop and rebuild the infrastructure that has been damaged due to the disaster. Thus, this step of financial aid would assist the government to recover the losses and reestablish the area to make it inhabitable for people. Thus, 'recovery' is the correct answer.

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i think its toxic gasses but i could be wrong