Answer:
A. Stay out of contaminated area and wait for professional responders to conduct formal decontamination
Explanation:
CERT stands for Community Emergency Response Team. The CERT members are trained volunteers who respond to any disasters which may impact any area. They are trained in disaster response skills, fire safety, medical operations, search and rescue, etc.
CERT member are volunteers who are trained and are not professionals.
In the context, CERT members are responding to a contaminated exposed area where they first followed the basic decontamination procedures to limit the risk of injury and exposure of the contamination. After following the basic procedures they should move out of the contaminated area and wait for the professional responders to further conduct the deconatmination processes.
Hence the correct option is (A)