ARGUMENT n. 8 definitions
Proof; evidence. [Obs.] There is.. no more palpable and convincing argument of the existence of a Deity. Ray. Why, then, is it made a badge of wit and an argument of parts for a man to commence atheist, and to cast off all belief of providence, all awe and reverence for religion South.
ARGUMENTATION n. 2 definitions
as true, from facts or principles known, admitted, or proved to be true. Which manner of argumentation, how false and naught it is, . . . every man that hath with perceiveth. Tyndale.