1. In an argument, what is used to prove a claim?

Evidence.

Explanation:

Evidence is the concrete facts used to support a claim. ... Many arguments begin by treating something as a claim, try to prove it, and then, once they have proved it to the author's satisfaction, treat it as a fact to be used as evidence to support some new claim.

no

explanation:

i love cake

and don't hate

i know i'm fat

but what's wrong with that

i cant rap

but im sure ya know that

its just for fun

so quit hatin' son

~courtney