An argument, in philosophy, is

a$)$ a connected series of statements with a central claim the writer is trying to defend $($the conclusion$),$ supported by evidence the author offers on behalf of the conclusion.

b$)$ a firmly stated opinion about what one believes to be true.

c$)$ a disagreement between two individuals that can often lead to a fight.

$a,b,$&$c$

$a$&$b$