Logos is an appeal to logic and is a way of persuading by reason. Concession is useful because sometimes to win you need all the assets in the room, and one of the best resources comes straight from the others mouth. It allows room for your opponents ideas and audiences beliefs. You're bridging truths to get to your point.
A-2, B-1, C-4, D-3 (I think) Hope I helped!
Humorous
hope i helped you out
