1, 2, and 3, this is because when someone is planning to kill there selves everything will be sudden they don’t care about anything yet they are happy at the thought of never feeling pain again cause they are about to die. Don’t hold me to this answer but I hope it helps!
False because mainstream smoke is defined as smoke from a cigarette or pipe. Second hand smoke is smoke that has been inhaled by someone then exhaled, making you the "second" one to breath it :)
