A nurse in an emergency department is caring for an adolescent following a suicide attempt. After reviewing the client's history, the nurse should determine that which of the following is the priority risk factor for suicide completion?

A. A previous suicide attempt is the strongest predictor of future suicide completion. It indicates a history of significant distress and an increased risk of subsequent attempts. B. An active psychiatric disorder is a significant risk factor but is not as strong a predictor as a previous attempt. C. Loss of a parent can contribute to emotional distress but is less predictive of suicide completion than a previous attempt. D. Substance abuse increases the risk but is secondary to the history of a previous suicide attempt.