Which of the following questions can help elicit thoughts of self-harm and suicide?

The correct answer encompasses the cumulative importance of all listed questions in addressing thoughts of self-harm and suicide. Each question serves a specific purpose in understanding an individual's risk level and exploring their mental state.

Asking about the availability of weapons or firearms is crucial because having access to lethal means significantly increases the risk of suicide. This question assesses the immediate safety and environment of the individual.

Inquiring whether the person has made any preparations can reveal the severity of their suicidal ideation. Preparations can indicate a higher level of intent, suggesting that the individual may be contemplating suicide in a more serious manner.

Lastly, asking if they have ever attempted self-harm but stopped is important in gathering information about their history and experiences with self-injury. This can provide insight into their mental health struggles, coping mechanisms, and potential triggers.

Together, these questions create a comprehensive assessment framework that allows for a better understanding of the individual's mental state and immediate risks they may face. Thus, all the questions work collaboratively to help elicit vital information regarding self-harm and suicide, making the choice that includes all of them the most effective approach.