Will's friend, Jacqui, has been acting really oddly lately, and he's concerned about her. He's not sure

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Will's friend, Jacqui, has been acting really oddly lately, and he's concerned about her. He's not sure what to do, so he goes to the health center and describes her behavior. They indicate that he should refer her to them immediately because it sounds like she may be thinking about suicide. Which behavior is indicative of suicidal tendencies and which not?Explain