@nborgella22, it'll be fairly obvious once you get into the questions themselves, but argument completion will usually take the form of an incomplete argument that is lacking a premise, which you are asked to provide. Argument evaluation typically takes the form of a flawed argument in which you are asked to point out the flaw. These aren't universal, but that'll give you a rough idea of the difference. As I said, it'll be a lot more obvious once you're digging into the lessons on each, but that's a quick overview.
