A nurse is caring for a client in a mental health facility. The client is agitated and threatens to harm themselves and others. Which of the following is the priority intervention?

Choice A reason: Administering medication may help reduce agitation, but it is not the first-line intervention in an acute crisis. Medication takes time to act and does not immediately address the safety threat. It is more appropriate after initial de-escalation efforts have failed or in conjunction with other strategies. Choice B reason: Setting limits is the least restrictive and most immediate intervention to ensure safety. It helps establish boundaries, reduce escalation, and maintain control of the situation. This aligns with psychiatric nursing principles that prioritize safety while preserving autonomy and dignity. Choice C reason: Restraints are considered a last resort due to their physical and psychological risks. They should only be used when all other interventions have failed and there is imminent danger to the client or others. Choice D reason: Seclusion is also a restrictive intervention and should only be used when less restrictive measures are ineffective. It may be necessary in some cases, but it is not the priority unless the client cannot be managed safely through verbal de-escalation and limit-setting.