specifically for questions with Suff & Nec terminology
Emil-KunkinOctober 8 at 03:46PM
You do not need to diagram each answer choice, specifically I think the ere are only two real use cases for diagramming, and you should vary the degree to which you diagram according to how helpful each is to you.
First I think diagramming is useful to help you see how an argument fits together if you don't immediately see it from the argument. That is, if you know there is sufficient and necessary in the argument but you can't put the whole thing together in your head (or see why it's flawed for flawed arguments) a diagram is a great way of visualizing it.
They are also useful for information retention. That is, for a long argument with a lot of sufficient and necessary (and especially parallel reasoning) even if we understand the argument well, it can be helpful to get it on paper in order that we don't just have to keep it in our head. If you have it on paper, you're not going to forget what you've read or make a sloppy mistake and misremember an if as an only if.
