I don't get the last one, so I'll give you the first 2.
COmmuicate:
1. Ask the problem: make sure to listen
2. Show you care about them: give them a reason to live
Offer Help:
1. Tell them that if they need anything, you will be there to help/
2. Get them a Psychiatrist, and tell them they will help
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The type of mental heal professional that would most likely prescribe medication to a patient with clinical depression is a psychiatrist.
