A client notifies a treatment team member of current suicidal ideation. Which nursing intervention would take priority?

The correct answer is D because notifying all members of the treatment team and placing the client on suicide precautions is crucial to ensure the client's safety. This intervention involves immediate action to prevent harm and involves collaboration among the team for effective support and monitoring. Assessing past history (choice A) is important but not the priority when the client is currently expressing suicidal ideation. Determining a specific plan (choice B) is also important but does not address immediate safety concerns. Identifying coping mechanisms (choice C) is valuable for long-term care but may not be effective during a crisis.