Answer: Argument
Explanation: In other to establish the justification or fight for the right to be vindicated, supporting views which could buttress the idea or reasons leading to or which resulted in a certain action or behavior has to be established. The set of claims, reasons and justifications made to aid being vindicated are called arguments. This argument are made in support of a behavior, theory or logic. Arguments aid in establishing the veracity of an idea or claim. For Arguments to be acceptable, they must be at least reasonable and possibly backed by proof.