Final answer:
In panic disorder treatment, it is essential to speak with the client in a calm and supportive manner, provide reassurance and information, avoid adding to their distress, and make them feel heard and understood.
Step-by-step explanation:
The correct answer is B. Calm and supportive manner; reassurance and information; their distress; heard and understood.
In panic disorder treatment, it is essential to speak with the client in a calm and supportive manner to create a safe and comforting environment.
Providing reassurance and information helps alleviate their distress and gives them a better understanding of their condition.
It is important not to add to their distress and instead make them feel heard and understood, as this can promote their healing process.