On the Second Day After a Disaster, a Disaster Relief

On the second day after a disaster, a disaster relief worker is found to be irritable and having difficulty focusing. He denies having any problem other than a headache. Which is the best action?

A) Dismiss the problem of inability to focus as probably being the result of worry, so that the worker can concentrate on the work at hand and deal with his emotions later.
B) Explain to the relief worker that he is experiencing signs and symptoms of psychological stress and recommend that he take some time off from work to relax.
C) Explain to the worker that his problem arises from multitasking and advise him to focus on one task at a time.
D) Suspect dehydration and encourage the worker to drink more fluids.