Which of the following individuals is at the highest risk of suicide?

The correct answer is an 80-year-old man who lost his wife last year. Certain factors increase the risk of suicide, such as recent loss of a loved one, in this case, the man's wife. The elderly are a high-risk group due to factors like social isolation, physical health issues, and bereavement. While experiencing a loss can affect anyone, the combination of age, loss of a spouse, and the associated emotional impact elevates the risk significantly. The other choices are not at the highest risk of suicide. A former alcoholic who has been sober for 12 years has taken steps towards recovery, reducing the immediate risk. A 40-year-old married businessman and a 36-year-old woman whose former neighbor committed suicide do not have the same level of immediate risk as the elderly man who recently lost his wife.