Hopelessness, social isolation (poor social suppo) and substance abuse are risk factors for suicide. Although insomnia, if its a pa of depression, can also be considered as a risk factor, however since no such history is given, it would be the best answer here Extra edge : Rebound Insomnia Condition of an exacerbation of insomnia, Associated with abrupt discontinuation of chronic sedative, hypnotic, or anxiolytic medication.