The Patient Has Been Depressed, and the Physician Plans to Begin

The patient has been depressed, and the physician plans to begin treatment with an antidepressant medication. In performing the initial assessment, what is the most important question for the nurse to ask?

A) "How much alcohol do you consume during the week?"
B) "Are you allergic to any medications?"
C) "How long have you been depressed?"
D) "Have you had any thoughts about killing yourself?"