I'll give you a question, please answer with step-by-step reasoning process.
If proof is found of someone killing people they will likely receive a long what?\nOptions:\n- going to jail\n- jailed\n- punishment\n- feelings of guilt\n- prison sentence

prison sentence
Prison sentence is a confinement in prison as a punishment imposed on a person who has been found guilty of a crime.

If proof is found of someone killing people, they will likely receive a long prison sentence.

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The final answer: prison sentence